Here's an interesting, and I dare say typical, collection of 'Internet acronyms'.
For a starter they're not all strictly acronyms, but we'll let that pass. The context given is a teenager communicating with a parent - but as the article dimly concedes, not all these terms are appropriate for a teenager to use.
Whilst BFF is young-girl talk, several of these are from online PC games played predominantly by young boys (and not-so-young men). Many are from rather older discussion boards used by significantly older engineers, techies and computer scientists.
There's a tendency to treat 'internet' language as if it's one thing. But just like 'I found it on the internet' is about as specific as 'I found it in the world', so 'internet language' is increasingly as unhelpful a term as 'people language'.
Top 12 Useful Internet Acronyms
http://www.grammar.net/acronyms
Top 12 Useful Internet Acronyms
http://www.grammar.net/acronyms
