Florida Rep. Mark Foley[/tag]’s resignation came just hours after ABC News questioned the congressman about a series of sexually explicit instant messages involving congressional pages, young men who are under 18 years of age….
…But, according to several former congressional pages, the congressman used the Internet to engage in sexually explicit exchanges.

They say he used the screen name Maf54 on these messages provided to ABC News.

Maf54: You in your boxers, too?
Teen: Nope, just got home. I had a college interview that went late.
Maf54: Well, strip down and get relaxed.

Another message:

Maf54: What ya wearing?
Teen: tshirt and shorts
Maf54: Love to slip them off of you.

And this one:

Maf54: Do I make you a little horny?
Teen: A little.
Maf54: Cool.

The language gets much more graphic, too graphic to be broadcast, and at one point the congressman appears to be describing Internet sex.

ABC NEWS article here

UPDATE: Here’s the graphic mails
And more of them