This chart categorizes 10 current 'social media' features : Twitter, Facebook, flickr, Linked in, YouTube, digg, Stumble Upon, Yahoo ! buzz, reddit and del.icio.us are evaluated as for : customer communication / brand exposure / traffic to our sites / SEO (search engines optimization)... and rated "good" (green) barely "OK" (yellow) or "bad" (dark pink).
4 features for 10 social media :15 out of 40 evaluated features are considered "good"... only fifteen :-/
chart = table | feature = characteristic
rated = judged according to its value or character
What ? Me ? Er... no... no Facebook accont ;o)