I think it is important that we restrict this definitional guide to acronyms that have been actively used (by more than a single user or a few outliers) in the LSD community within the last 12 months, and not in the context of an acronym thread!
Obviously, this is a slippery definition - what definition isn't? But we want to keep this guide tightly focused on the LSD environment, rather than the web-at-large environment (where there are many many many more acronyms, e.g. n00b)
Having said that, maybe I'm missing a huge chunk of acronyms. When I did my 'research' (if you can call reading some LSD threads over a few hours 'research') I didn't really delve into the off-topic boards. If I have the time today, I'll do that to try and verify these acronyms and offer others: perhaps OP, you can do the same?
Keep in mind, we still need to get this list posted once it is done!