Perhaps there could be a search in every persons' profile page which shows up all the user's previous posts. This would be useful not just for the user him/her-self, but also others wanting to see what general advice a particularly knowledgable person might have given... I dont know how much this would strain the database, but Ive seen it on a couple of other forums, one of which I personally knew the creator of, and that one definitely did not have a very powerful database.
Hi, At the top of the page is the option to search messages. This can be done here http://forums.afterdawn.com/search/ just type in the name you want to look up in the box next to search messages written by and his posts will show. Also will show what forum thread (example...nero forum, dvd shrink forum, etc). So no need to put it in a persons' profile if this is what you are suggesting.