As Patrick Ruffini blogged yesterday, the memeorandum Leaderboard is now up and running.

What is the memeorandum Leaderboard? Pulled straight from the source:

The memeorandum Leaderboard lists the sources most frequently posted to memeorandum.

This particular version corresponds to the 30-day period ending October 25, 2007.

Sources are ranked by Presence, the percentage of headline space a source occupies over the 30-day period. "Discussion" links are not taken in to consideration here — only full headlines are counted.

In other words, when they post a blog entry, other bloggers read, link, and discuss the content of that post.

Of interest, the only Presidential candidate to make the LB's top 100 is Fred Thompson's blog, the Fred File. In fact, the Fred File is the only "candidate blog" to make the list.

Most of the credit clearly falls to Fred Thompson, the candidate, whose late entry to the race sparked tremendous interest on the Right (and Left) which likely contributed to this ranking.

But the team behind the Fred File, including blog veterans Sean Hackbarth who is on the official side of the campaign, and both Jon Henke and William Beutler, of the firm New Media Strategies, also deserve a tip-of-the-hat.

Regarding the Fred File's placement on the LB, NMS' William Beutler said, "Of all the presidential campaigns, this one is doing the best job not just in using its campaign blog effectively, but also working with the larger conservative blogosphere, as an important element of the campaign."

It'll be interesting to see how current events and candidate gaffes or cheers help influence this latest metric over time.