The only things wrong at the moment are:
1. Retrobike is a victim of its own success, so sometimes a new thread will disappear off the front page too rapidly for comfort
2. because of that, there is a lot of bumping - which only makes the problem worse
3. people aren't always careful enough to make their titles/text search-friendly
4. the search engine isn't as clever as it might be, but I assume that is outside Retrobike's control
5. dibs is allowed
I don't know whether it's possible with the forum software that Retrobike uses, but it might make it easier if there was a standard template that prompted sellers to give all the information that buyers (and the search engine) need, much of which is often omitted.