why not make a forum post which is locked with the updated companies for that month.As for rating them a person can just make a new topic and say what they liked or disliked about the conmpany.
January 2009 newest updates
February 2009 newest updates
then after 1 year or 6 months they get put into their category and it starts over.
thats a quick fix,and a quick glance at new companies.