I just got a request from McCain-Palin Victory 2008, which is apparently a joint fund-raising committee; they’re asking for up to $5000 (which is well above the normal $2300 limit). So you don’t have to take the word of the NYT.
Say what you want about money and elections (and I tend to go with the Freakonomics idea that contributions reflect appeal rather than greatly influencing elections — certainly the fact that Obama is getting many small donations is significant), you can’t both condemn your opponent for not using the funding-limited public financing, and then also find a loophole to raise your own money. As far as I’m concerned, a letter with McCain’s signature asking for money is no different from a letter from Obama asking for money. The fact that it goes though the shell committee of McCain-Palin Victory 2008 instead of directly to Obama For America is a meaningless distinction. It’s a political donation to elect a specific candidate.
(Obama is also using joint fund-raising committees, but at least isn’t hypocritical about it.)