Welcome!
Glad we're your new peeps, you are our new peep, too.
Yes, many discussion threads would be equally at home in several of the forum topics. I believe the larger number of forum topics was established to assist posters with "advanced search" as I believe a maximum of 200 results are displayed at once. Isolating a search by forum topic can, then, at times be helpful.
Many discussion subjects tend to repeat over time, as there are always new people on the forums, it can be difficult to find some old discussion threads on a particular subject, and the experiences of posters may change over time.
