Announcement below comes from MyHeritage:

We are excited to announce the launch of the MyHeritage Wiki: the new, community-led online encyclopedia for genealogy and DNA. The new wiki is hosted on MyHeritage, but its scope is very broad and goes far beyond the specifics of the MyHeritage service. We invite you to explore the wiki and use it to further your knowledge of genealogy and DNA.

But more importantly, we invite you to join us on a meaningful and ambitious journey to transform it into the ultimate online encyclopedia covering every family-history and DNA-related topic under the sun, in dozens of languages. By becoming a contributor, you can help us make it happen!

Read about the wiki at MyHeritage blog.