I love the idea of wikis for EA knowledge, but is there an attempt underway yet to consolidate all the existing wikis, beyond the Wikia one? Maybe you can coordinate some data import with the other people who are running EA wikis.
When the Priority Wiki was launched, (I but much more so) John Maxwell compiled some of the existing wikis here.
I think for one of these wikis to take off, it’ll probably need to become the clear Schelling point for wiki activity – maybe an integration with the concepts platform or the forum and a consolidation of all the other wikis as a basis.
I imagine there’d also need to be a way for active wiki authors to gain reputation points, e.g., in this forum, so wiki editing can have added benefits for CV building. Less Wrong also has forum and wiki, and the forum is a very similar software, so maybe they already have plans for such a system.
I am skeptical if making an EA Wiki is better than uploading EA-relevant articles on Wikipedia (https://www.wikipedia.org/).
There are many other arguments for why it wouldn't be a good idea, but I want to focus on the target group.
Case 1: The target group is EAs. In this case, the EA Wiki would probably host in-depth/comprehensive knowledge that is not available on places EA's normally visit like 80000hours.org or effectivealtruism.org. It would serve for questions like "Has anyone in EA ever talked about __?". As of now, most of this "in-depth" knowledge is present in the form of EA Forum posts and comments. Most of the content on the EA Wiki would be copy-pasted from the EA Forum. The EA Forum is well-searchable, and it already fulfills this purpose. For long-run things like "how should the EA content be organized in the long run (e.g. 5 years later)", an EA Wiki may be more promising. But, for the reasons written above, it is difficult to see any real use of it in the short term (e.g. 1-2 years).
Case 2: The target group is non-EAs. The EA Wiki wouldn't show up in search engines. Period. Wikipedia articles appear much more easily on search engines and are linked to by other Wikipedia articles. A much better idea would be to upload EA-relevant articles on Wikipedia. Also, there is more scope for extending EA to other languages since Wikipedia supports articles in a 5-10 other languages.