There have been a number of good critiques of President-elect Obama's one-way use of YouTube to broadcast his weekly radio address (see especially my colleague Ellen Miller and John Dickerson's takes) and so I'm not going to repeat them here. By posting the address on YouTube--even without comments or ratings allowed--Obama is allowing us to see something that we couldn't see before when presidential addresses were just on radio: who cares to listen and who cares to link.

It's been a while since I've checked in on our charts tracking how the campaigns are doing on the web, and even though we're now firmly headed into the August doldrums before the national conventions, some interesting trends are worth noting. In a word: Obama keeps adding friends, but McCain has been gaining traffic. And Bob Barr seems to have some real grass-roots support...

As you may have noticed, we've made some spiffy design improvements to techPresident, all in the name of easily findable and navigable charts.

Our-ever popular charts showing how the candidates are faring on Facebook, MySpace, YouTube, Eventful, and in the blogosphere have had the same alpha-stage design for some time, so we've given them a facelift.

I'm not sure how far we should take this analogy, but Ron Paul is to the Republicans of 2008 as Howard Dean was to the Democrats of 2004: the one candidate speaking out prominently against the war when his colleagues were silent or supportive. Since politics, like nature, abhors a vacuum, we shouldn't be surprised that he's starting to take off online.

We're pleased to announce our newest feature: Technorati tracks, a series of dynamic charts that show how often bloggers are mentioning the presidential candidates over the last 30 and 90 days. The charts are broken down by party, and we've also included a third set showing how bloggers are also talking about prominent non-candidates like Al Gore, Newt Gingrich, Wesley Clark and Michael Bloomberg.