Women are much more discriminating. I think both types of people are equally interested in having an attractive partner. But women essentially give the thumbs up to only half as many guys as guys giving the thumbs up to women.

Dudes have been making up stuff about themselves probably since there have been dudes.

Text is, in some ways, on the way out, unfortunately. There are dating sites now that are just pictures.

A great piece of advice for online dating is to stand out from the crowd. So greetings like "hello" and "hi" are very common. They do less well than things that are a little bit quirky or a little bit weird, like "howdy" or "holla." The rarer your salutation, the better it does, in general.

I know that shorter messages are better in terms of reply rate. The optimal length is something like 50 characters. Characters, not words.

Kind of paradoxically, men are very open minded or very even handed with their votes of women.

You take a picture of yourself in some exceptional situation - skydiving or whatever. People always post those photos because it works - you're saying something about yourself that begs a conversation and that's what the users are there for.