Kellanved wrote:I don't know how often you move topics that are relevantly linked from the outside. I would not expect it to have a significant impact,
Again lots of factors in what constitutes a relevant page but age is one of them. For example I have one product that is widely discussed on my forum so the name comes up very frequently in page titles, content etc. One page was indexed back around 2005 or so and this page has consistently remained in the top results for that specific term. It has slowly moved up through the years. Only thing that has changed is overall site juice and age. Right now its only beat by one competing site and the products homepage.
If the URL disappears its possible another from my site will fill its slot or at least show up somewhere near the top. I'm not going to remove it to find out though.
A 301 redirect *should* maintain that continuity. I just moved my entire forum to a new a domain redirecting without any issues. All pages maintained there current placement or improved slightly.
Techie-Micheal wrote:Also, I'm quite sure Google et al know that bulletin boards are quite fluid and probably take that in to consideration.
I've often wondered if major software like phpbb, Wordpress etc. is identified by bots. I mean specifically like they determine that it's a phpbb forum and adjust accordingly. For example when this site switched to using phpbb3 the descriptions were bad, often listing users, post counts etc. They are not that bad now. The conclusion would be the search results were adjusted for the software.