It's kind of a recurring theme, but of all the review sites, professional photographers appear to be moving their stuff to 500px.com, a Toronto-based company. I like the layout, very clean. However, it's less of a social-driven site, at least for now. 500px has a single "nude" checkbox, but I find it funny that photographers ignore it anyhow as they don't consider it nude but art. A few other alternatives are mentioned. Anyhow, for what's it worth:
http://thenextweb.com/apps/2011/07/08/why-all-the-pros-are-leaving-flickr-for-500px/
http://fadedandblurred.com/blog/is-it-time-to-dump-flickr/
http://www.40tech.com/2013/04/24/flickr-vs-500px-and-more-why-i-use-5-photo-sharing-sites/
http://www.flickr.com/photos/ironrodart/6399603043/
http://photofocus.com/2013/05/22/remember-when-i-said-flickr-is-back-never-mind/
http://www.technewsdaily.com/18170-3-flickr-alternatives-for-disgruntled-photographers.html
Seems there are good alternatives if reclassifying some of the photos in question is not enough for Flickr to open the account back up. What I find annoying is that to view Wizard's photos, they make you create a Yahoo account or sign in via Facebook, then try to get you to agree on Flickr controlling Facebook posts.