I like www.greenbackd.com but new posts are few and far between.
www.valueinvestorsclub.com I study the ones with high volume high recommendations–not to find ideas but to seek wisdom.
http://www.frankvoisin.com/ An entrepreneur with common sense as an investor.
http://covestreetcapital.com/Blog/?p=731 Reading material. Good for them for sharing.
Your suggestions don’t have to be of blogs that are active, just those that you think others can learn from.