Questions should be posted to Feedback or Help:Desk.
Whereas Rob Kohr is discussing making EditThis a fee-based subscriber service, and whereas I have never been entirely satisfied with the service or the software here, I am soon going to move to my own hosted service. Siteground offers wiki hosting for a mere $6 per month, and that will mean I can install the current version of MediaWiki as well as the specific extensions I strongly desire. (See Semantic MediaWiki, which I've long since requested here, and about which I've long been ignored.)
Even if EditThis costs less, Kohr hasn't demonstrated that his service is worth even a minuscule fee. The only reason to remain here is that I can have a private wiki for free. If it costs anything more than free, I'm moving on to find better service.
If you are in any way dissatisfied with EditThis, yet you don't want to go to your own hosting service, I would recommend you look into ScribbleWiki. They use MediaWiki 1.10, and public wikis are free.
I am sorry to see you go stormraven. I wish you best of luck with your new wiki service. You have been invaluable to editthis.info, and I am sure you will provide a great service there.
EDI is still free, and the only thing I will be charging for as of now is if you would like image uploads, and it will be a one time fee of $5. This is because the huge number of files that the system has to support for a free service for image uploads doesn't work out. If people would like 100% free image hosting, there are plenty of services that offer that that can be used in EDI.
I may start charging when I release the new codebase with mediawiki, but you are right, in its current state, EDI is best as free.