Over at Cprogramming, of the last 5000 signup attempts, approx 90% of them failed the first basic task of "clicking the link in the confirmation email".
We're not exactly fishing in the deep end of the pool here.
apart from these, this forum is on a blacklist at most active c++ sites because the c++ tutorial and learning sections are so far out of date. The warning is for the old info but it comes across as just don't visit the site.
Everyone seems to be on reddit now, though that forum took a big hit too because of some political thing that I don't even remember.