If you want to search the bulletin board for a particular thread or topic definately use its search function. It's very powerful.
It does exactly what you tell it to do, so be aware of what you are asking it to do.
It lets you choose whether to search for an exact term or a partial match. It allows you to choose between searching an entire message or just a title (ie. the name of the thread). It lets you search all forums or one specific forum.
It also allows you to search for a particular members posts.
Take advantage of it, its great, but remember if you don't find what you're looking for, it's probably your fault. True story! 

[This message has been edited by Finn (edited 02 March 2001).]