Why not just independent forum sites like 1998-2008. I was a member of 10 or so very specific forums where I could get expert advice very quickly. That is in the rare event that my problem hadn't already been discussed in great detail with highly detailed walk throughs.
Then each of those forums had a marketplace where you could buy pretty much anything relevant to that interest at great values with scams being pretty much non-existent and any disputes that did arise carried out and mediated in public.
And all the forums had off topic as well where politics and other things were confined.
Oh and advertising was limited to a few banner ads at the top of pages and various plugs in people's signatures.
Lastly, I could get all the relevant updates from the sites I was interested in with a nice orderly rss feed customized to my liking.
Then each of those forums had a marketplace where you could buy pretty much anything relevant to that interest at great values with scams being pretty much non-existent and any disputes that did arise carried out and mediated in public.
And all the forums had off topic as well where politics and other things were confined.
Oh and advertising was limited to a few banner ads at the top of pages and various plugs in people's signatures.
Lastly, I could get all the relevant updates from the sites I was interested in with a nice orderly rss feed customized to my liking.