David Gerard said:
Advertising on wikipedia tends to be treated as one of the Worst Ideas
Ever because when it was first even *mooted*, the Spanish wikipedia
promptly forked. Producing the Enciclopedia Libre and taking a large
chunk of the userbase with it. A truly pointless fork, because it's got
pretty much the same goals.
So the question would be whether it would risk a similar effect.
No. Next question. :)