Hi,
in the wake of the Community Week there has been some activity on #opensuse- wiki (on Freenode) and people have volunteered to quality check existing articles (find duplicates, stubs, obsolete/outdates articles, suggest mergers,...).
While objectionable articles will get marked by respective templates, there is no way to tell whether an article a reviewer considered to be OK has been checked or not.
Therefore I would suggest to mark articles with http://en.opensuse.org/Template:Contentcheck. If called with {{Contentcheck|~~~~}} it will add the following line to the article:
Passed QA check: <LOGIN OF REVIEWER> 11:33, 5 June 2009 (UTC)
and will add the page to http://en.opensuse.org/Category:Contentcheck