Obama is running an amazing campaign on offense and defense. His team must have studied the 2004 elections and realized that not responding quickly and unequivocally to swift boat attacks can spell doom. Just ask John Kerry.
In that light, Obama has a dedicated a web page to dispel and correct the myths, lies, and accusations about him and those around him. It is updated regularly and is a great place to go to counteract the "Obama is a Muslim" and "Michelle is a racist" memes circulating the net, dinner parties, and neighborhood cookouts.
McCain, who in '04 strongly condemned the swift boating of Kerry, now says he can't control or referee all television ads (and definitely not the Internet since he's computer illiterate) and adds, "“I admire Sen. Obama and his accomplishments, but we all know there are groups who want to attack me.”