There is a deleted question that has been linked to by this post, and from the title, it seems to be of historical significance. However, I don't have 10k, so I will need someone else to read it for me and either undelete it and protect it, or explain why it was deleted. Anyone?
deleted by Jeff Atwood♦ Feb 1 '12 at 8:52
No idea why, exactly, but I'm not inclined to undelete a 4-year-old question that was about the community coming up with revenue ideas. A lot of stuff happened in four years, and in any case, I think we'd rather discuss specific suggestions or ideas instead of building a list of them for its own sake.
But, for completeness' sake, here's the answer that was linked to in the other post you mentioned. From our very own Shog9:
SO-branded, WiFi-soaked Waffle Houses!
(I don't know about you, but I could go for a waffle right about now.)