RE: a be-safe thread for bitcoin: There are already a couple "be safe" threads stickied in the Bitcoin Discussion forum (e.g. the beware of trojan wallet stealers thread, the newbies article that links to keep-your-wallet-safe, etc).
Writing a more general one is not a bad idea; if I knew last November all the craziness that would happen this year I would have written one back then (but back then nobody was spending tens of thousands of dollars speculating on bitcoin).
RE: putting my employer in my forum signature: what do other people think? Would that be unfair advertising for TruCoin or good full disclosure?
If it drives more business to TruCoin then that will eventually, hopefully, mean more money in my pocket, so if it is up to me heck yeah I'll mention TruCoin in my signature!