According to Nick Beaudrot (via e-mail), Obama's got a lot more room for future fundraising than Edwards or Hillary:
The most impressive thing about Obama is how low his per-contribution take was from non-internet sources.
Obama got $25M from around 100,000 donors. But, $6.9M came from 50,000 online donors. That means his non-online donors averaged $362 per contribution from offline sources. In contrast, Edwards non-online sources were around $1070 per contribution, and Clinton's at $2080.
This means Obama can max out his offline donors for an additional $96.9M, way more than Edwards (10.7M at most by my estimate) or Clinton (2.3M, though perhaps more depending on how much of her money is for the general).
That seems like an important advantage, particularly because there's no likelier donor to a presidential campaign than a past donor to that presidential campaign. What you often see in fundraising is an early spurt followed by a second quarter drop. This suggests Obama might be able to sustain his take in a way the others won't.
