How about more of the acronyms that freepers use? Sometimes it is difficult to fathom what words they represent.
Last year I removed the common web acronyms (LOL etc) as they are readily available and as an effort to keep the length of the lexicon somewhat manageable (see the link to the 2006 Lexicon and read the statement under the lexicon title for the changes I made to the pre-2006 lexicons).