I tried to deal with this silently by flagging a couple of posts for moderator attention, but it doesn't seem to be going anywhere.
On the main site, we have a user whose posts seem to follow this pattern:
- Copy & paste vaguely-relevant content from other Q&A sites, without revealing the source.
- Then add dubious links that point to the sites "thephotogadgetblog.com", "myblogtips.info", "shareyourviews.org", "techtalkies.info", "ratethereview.com" – all of which point to the same IP address, and all of which seem to be registered by the same company, "Ergosum Technologies".
And a second account for the same user: https://photo.stackexchange.com/users/5667/sim
PS. Moderators, once you have dealt with this issue, feel free to delete this post.