Interesting incident -- read the full article for details.
Microsoft Corp. landed in the Wikipedia doghouse Tuesday after it offered to pay a blogger to change technical articles on the community-produced Web encyclopedia site.
While Wikipedia is known as the encyclopedia that anyone can tweak, founder Jimmy Wales and his cadre of volunteer editors, writers and moderators have blocked public-relations firms, campaign workers and anyone else perceived as having a conflict of interest from posting fluff or slanting entries. So paying for Wikipedia copy is a definite no-no.
Source: Microsoft riles Wikipedia