It’s significant because Dean almost certainly outdid every other Democratic candidate this quarter, and he’s solidly in the top tier because of that. This is a major difference from insurgency candidacies such as McCain’s, Tsongas’, and Bradley’s.
It’s interesting because the average contribution was $66.85. By my count that’s around 15,000 contributors. That’s both a lot of eyeballs looking at a political website and not very many eyeballs at all when compared to the number of votes Dean needs. Sort of the first trickle of a dam breaking, I suspect. I don’t see the Internet having an immense effect on this election cycle, but 2008 should be interesting.