How is copyright handled for wiki contributions?

There are many web sites that offer users the opportunity to write articles for them, to be added to a large collection of translation related articles. These articles are copyrighted and may not be added to ProZwiki as-is, but nothing stops anyone from approaching the individual authors for permission to add their articles (or derived versions of it) to the ProZwiki.

Just remember that ProZwiki content belongs to everyone, and anyone can edit it. One can also get some good ideas for ProZwiki articles by looking at pages submitted to those other article sites.