What does <3 mean?

Question

What does <3 mean. And if you could let me know what all those other internet slang words mean, that would be awesome!

Answer 1

<3 is a heart
here is a list of other chat slang
grab a glass of water you may be here a while

http://www.city-net.com/~ched/help/lingo/chatslang.html

or you can print it out and keep it handy until you know all the ones you would likely use

Answer 2

doesn't this mean that three is more than.........