Hi Boaz,
I've looked at the potato-factory, and to be honest I don't like the interface. The very fact that I have to logon before I can see anything makes it fairly useless for me.
Now, before and put in too much infrastructure, I think we can start small as follows: -- have people submit material to wine-devel -- various folks (volunteers needed) will collect them and post them in a nice, orderly manner to a special area (TBD) on WineHQ
This has the advantage of being a lot more controlled, and I'm sure the editorial review will pay off. If the volume becomes too big, we can consider in the future to automate the process. But until then, I think the manual approach is better.