The idea is to create a social community (for example similar to HumHub). But on top to that social community aspect, the solution is supposed to have product specific sites for each user. Every user can sell this product via his product site. The news feed should show new products and the users shall share, comment and like them.
Of course there is no finished solution for that. Anyhow I would like to get some ideas what kind of solutions, even in combination, could be used to accomplish this idea.