Go to BB.com's discussion boards under supplements. There is a lot of discussion on usnic acid there. A few people have gotten some tabs and are going to sell it to others (Manteca is one of them, and there is another). They seem to like the stuff a lot.
MalibuTrim is similar to LipoKinetix, but in herbal form. Eat and Lose has only 60mg, and supposedly it is safe to take much more (like 250mg - 500mg) at a time. Don't take my word on it, though. I wonder if the two aforementioned products even contain what they say...