I'm writing this to organize what I'm doing in a more effective manner and definitely would love someone else to critique what I'm doing and add pointers, and for those who need a bit of a boost and help with the whole online dating thing, there's definitely things to be learned here. So, if you know what you're doing, then please add! If you don't then definitely read through this, I'm certain you'll learn a thing or two. For sure you will!
The Message:
I only message the hottest women on the dating sites, I hope you do to, I've developed five styles of openers I use:
1. The Aggressive Overly Sexual Message
2. The Slightly Direct "I'm Interested In Your Life" Message
3. The Under The Radar "Your Personality Is What I Like About You" Message
4. The "What Makes You So Fun" Message
5. The "Free Form Fun" Message
The hardest part in using these messages is figuring out which one to USE on any given girl. First off, each girl has her own bullshit she's going to completely use against you in a message. What I mean is, she'll be as picky as possible, and even if she finds you interesting, she'll overlook you for something stupid, and she can because in online dating there's a billion other men who are willing to message her. So, pickiness is the biggest thing you'll face, even if you're a ten out of ten in every womans eyes, pickiness is the biggest shit holding every man back in online dating.
I wrote each of these messages and pretty much modify them based on whatever girl I'm talking to and gauge their profile and message them accordingly based on what I feel suites the situation best. basically these three messages have been most effective for me thus far.
What Each Message Entails:
MESSAGE ONE: 1. The Aggressive Overly Sexual Message
This is my go to if the profile is blank but she's hot, if she seems like she's a "sports type girl" or more of a tom boy. I also use this if she is more small town like and boring.
I'm better than these other dudes, I'm incredibly funny and fun as fuck to be around. You have gorgeous eyes, and your body is sexy as fuck. I'm definitely interested in talking with you.
Get back to me, look forward to talking to you
I attach a SINGLE photo, to keep them wondering.
MESSAGE TWO: 2. The Slightly Direct "I'm Interested In Your Life" Message
This is a bit trickier, I cannot give you a PURE example, but I can give you an idea of how it works.
Say she's a Criminology Major, and she lists a whole other slew of interests. I start with something like:
Criminology Major, that's awesome. I assume you deal a lot with deviant behaviors and sociological issues contributing to these behaviors? I ask because I'm interested in this field and kind of don't know what to expect from it. Anyways, I look forward to hearing back from you, you look incredibly cute and seem like you could be a lot of fun.
I either attach one or two pictures, doesn't matter as much.
MESSAGE THREE: 3. The Under The Radar "Your Personality Is What I Like About You" Message
She seems overly confident, high status and awesome as fuck. She has her goals and values set in stone and she's confident with herself. Hit her with this:
You seem pretty interesting and fairly fun. I like that you have standards and can't say that that isn't the reason I find you attractive. I have many passions in life and enjoy the finer things, and you seem to be that type of person to. You also seem to be pretty straightforward and honest which is rare to find on a site like this.
Anyways, don't be intimidated, I look forward to hearing back from you!
MESSAGE FOUR: 4. The "What Makes You So Fun" Message
She's a HUGE girly girl, or looks like it in her images, but doesn't say a whole lot of exciting shit in her profile:
Come onnn what are the crazy cool things you like to do? Like skateboard in your basement or run in circles until you pass out? You seem like you could be fun. 
I usually attach two pictures of me having fun with this one. Vary this up, don't use the same one every time, but saying fun shit usually gets the girl interested and into you.
MESSAGE FIVE: 5. The "Free Form Fun" Message
If all else fails and you're lost, I do a short free form message to show her I'm fun and awesome to be around, but let her do a bit of talking. Example would be:
Do all people from *insert city she's from here* wear funny hats like that?
Just keep a positive fun vibe going on here.
NOTE: I will not use this as an example of what to say, but list it here because Message Five (isn't even really a canned message, lets be real) is for those who have a GREAT feeling for all profiles and have something excellent to say. This is for advanced users of course.
How To Determine Which Message Works
1. The Vacant Profile with Provactive, or even CUTE Images
These profiles pop up a lot, a hot women or incredibly cute one doesn't really fill it out and simply sends you "Just message me to find out!" These women are trying to see which man is going to impress them the most based off of knowing anything about them. This is the closest you'll get to a club approach, but online because you don't have a whole lot to go on, and you'll have a lot more difficulty dealing with them.
I hit them with
MESSAGE ONE and I'd say five out of ten respond positively. Or, I hit them with
MESSAGE FOUR, but this is strictly if you're confident she has a bit of a girly girl flair going on.
2. The Basic Profile, Filled Out But Kind Of Boring
These profiles are a bitch because she'll put stupid shit like: "I'm a simple girl who loves to relax and watch movies. I am in school and work part time. Message me!" Really, they want someone to take charge and make their mundane life FUN. So, I hit them with
MESSAGE ONE. Usually this is dynamite because you sound fun, sexual and aggressive, things she's probably never experienced from a man.
I mix it up a bit too, and sometimes throw in a: "P.S. What are you taking at school? You strike me as a nursing girl."
That usually works wonders and gets great responses.
OR, you can go with
MESSAGE FOUR but you have to have a good feeling for her profile going on to make it work, otherwise it will throw her off and she probably won't respond.
3. The GIANT PROFILE
These are the profiles that are massive and have been filled out in EVERY way. What I mean is, EVERY box is full to the brim, and she spent a ton of time emphasizing what she's doing with her life. Higher quality women in all facets of life usually have these profiles.
There are two message choices you can hit her with here:
MESSAGE ONE if she seems either sexually confident, or gives off a small town vibe, this message works great. Basically, you're sexually agressive and showing her that you're also interested in her personality, but this is more of a risk (no response), but better pay off thannn...
MESSAGE THREE. Hit her with this, and I find it's the most powerful one in this circumstance. You're showing her that you are a valuable as fuck dude, and that she is also sort of valuable too. That you find her sexy BASED off of her intellect, and if she grabs, it usually intimidates her a bit. This has a bit less of a pay off, opens up more gate for conversation, but leaves less breathing room for showing her how sexually exciting you are.
4. The BITCH Profile
This is pretty self explanitory. This is the shit a girl who knows she's hot and KNOW'S she is awesome writes. Posting shit like: "IF YOU'RE A FUCKING LOSER DON'T MESSAGE ME."
I find the best approach is
MESSAGE ONE. It's straight to the point and shows a "I don't give a fuck" vibe that she is naturally attracted to.
5. YOU'RE LOST!
Say she has some fucking crazy mixture I didn't list here? Well... then go to the conventions of
MESSAGE FIVE. Be fun, playful and happy. Remember you want to STAND OUT from all the other eight hundred messages she gets, so fucking BE THE MAN and stand out. Say something witty, comical, whatever, get her interest going.
CHAT