Internet chat terms

So this message is for German speakers, but if you speak Spanish or French or Russian, etc. feel free to add in...

What terms do Germans use when chatting online? Are there equivalents to English "brb," "lol," "omg," etc?

Thanks in advance.

ILD = Ich lieb' dich

Skippy, ILD

In English, people usually say "I <3 U" as an abbreviation for "I love you".

MDR = "Mort de rire"