Hey quiz -
it requires a bit of juggling, but basically it's a case of not getting emotionally involved with one person until you've met them at least once, possibly several times. That comes from getting your thick skin on and realising it's all BS until it happens. Most of the people you talk to you won't meet, most of the people you meet, you won't meet again. It is a numbers game which works faster for some than others.
Try and respond to two or three mails (from different people) a night, if you can. Instant messaging is, in my opinion, a waste of time until you've met someone - everyone can be witty, caring, sensitive behind a keyboard, not so much in real life.
Take a night or two off if you want, it doesn't have to be all the time, and it can get addictive very quickly.
Learn to screen for red flags early before you've put much effort in, but make the flags you're looking for realistic - racism, lolspeak, something like that, not the wrong colour hair. There are plenty of fish in the sea, but you've got to make sure you're not just hunting for salmon.
And, meet up early, don't let it drag on for weeks, so you can drop and move on, or arrange a second date. Generally people have several discussions on the go at any one time, it's more efficient that way. Its confusing but it can work for people.
good luck