Here is some information about the items in the table.
(these docs are in alpha)
# — The rank of the site
Site Name — The name of the site (hot linked)
RSS — Link to RSS feed, if available
Score — The mathematical score for the site
PR — the google toolbar page rank
Alexa — The Alexa Rank
SERP — The sites position in Google for the term “internet marketing” (no quotes)
TRank — The Technorati Rank
TAuth — The Technorati Authority
Circ — The RSS Circulation according to FeedBurner
Hits — The RSS Hits as reported by Feedburner
