alt.internet.search-engines

Any of you guys know anything about google punishing bloggers who dare to
write paid posts or sell text link and / or contextual link advertising?

From what I've seen here:

Google Goes after the Everyday Blogger
http://community.izea.com/blog/2007/11/google-goes-aft.html

http://boards.payperpost.com/viewtopic.php?t=9525&start=156&postdays=0
&postorder=asc
( http://preview.tinyurl.com/34phtb )

http://www.payu2blog.com/townforum/showthread.php?t=342

...and in my own experience, blogs all over are suddenly turning up with
pagerank zero if they contain any paid for links that aren't nofollow'd
or if they even mention payperpost, payu2blog, sponsored reviews, text
link ads, and similar companies.

From what I've seen this isn't just a few blogs either. It seems they're
dropping like flies.

Is it so awful that a blogger should DARE to earn some money selling
advertising in the form of sponsored posts and / or links?

As for using nofollow. Advertisers universally require that links
they're paying for NOT have nofollow.