I just got off the phone with MyWikiBiz and reached what I think is a very favorable agreement about this sort of thing.
The big problem with paid editing on wikipedia is NOT that someone is getting paid to write, but rather that this causes a rather obvious conflict of interest and appearance of impropriety. This was my problem, and they immediately saw why this was not in our interest or theirs.
Rather, what we brainstormed about as a nice mutually beneficial ground would be for them to charge customers for writing high quality NPOV articles about their companies, with sources and verifiability, but for them to work with well known and respected wikipedians who are NOT being financially compensated to actually enter the articles into Wikipedia upon their own independent judgment. This will avoid, for MyWikiBiz, a lot of sad fighting with us which is likely to be ugly and unproductive all around.
This preserves our independence as a volunteer editing body, while at the same time supporting the creation of high quality NPOV content. I am very pleased with this idea.--~~~~