I have looked at Free Republic's site & don't see anything about this...their site usually links to other articles but I don't see any links to other sources talking about her shirt. Like Drudge, it's a site that links to articles of interest. www.freerepublic.com
Editing to add -
Ok they must've linked to an article discussing her shirt, & since they allow comments, the comments got nasty. Comment sections throughout the blogosphere are notorious for containing astoundingly offensive material...the comments in my local paper get heated & nasty at times. I don't always approve of or agree with what's said, & I know better than to assume the powers that be at my local paper agree with the comments anymore than those who run Free Republic agree with all those who comment (anonymously) on their site.
I don't assume every Democrat was cool with the rancid treatment of Palin's daughters - the one who had a baby or the 14 year old Letterman joked was knocked up by A Rod. At least comments on a message board, however vile they may be, are not broadcast on national TV & laughed at by a live audience. It's all pathetic. I believe Free Republic probably removed the comments. Aside from disallowing people to comment, that's about all they can do.