Some people like to put "tags" in the title within brackets. Like "[GLBSE] [ANNOUNCE] ASDF: Generic asset". I personally don't like this style. I prefer to include the tag info within the sentence, like "Announcing ASDF, a generic asset on GLBSE". When tags are really necessary, it may indicate that a new subforum should be created.
Personally, I find the bracket usage very helpful. As an investor that wants to keep up with recent news, scanning the "unread posts" list for "[GLBSE]" speeds things up. Bracket usage also helps me skip over threads that are just chatting.