Well lets see...hes been very anti-UN in the past, and if the story is accurate about the group offering to give him one of the websites for free and the other for 250k...sounds like a pretty fair offer to me. Instead of using the free market solution he wants to have it forcefully taken? Yeah thats something.
Hold on, you're saying that Ron Paul's enforcement of a trademark (a valid claim, I think, given that the people are using the site RonPaul.com to refer to and presumably raise money using the name of ... Ron Paul) is a symptom of ... what again? Libertarians tend to recognize that there are in fact limited legitimate roles for government, and many recognize some level of protection of trademarks as a component of that.
It's kind of funny because he's going to a UN organization and all, but all this righteous indignation has to come from a preexisting dislike of Paul rather than a moral judgement of his actual actions. If another politician did the same thing, no one would so much as raise an eyebrow. Hell, we can hardly get eyebrows to raise when yet another politician is involved in yet another shady business deal that nets them freezer-loads of shady cash. But if Ron Paul dares to buy refundable first-class airline tickets or sue someone running a domain name under his trademark, OMG!!! RON IS CORRUPT!!! Seriously, people make more noise about Ron's minor foibles than they do about felony-level crap that other politicians pull.
The guy isn't perfect and I find myself disagreeing with a lot of the stuff he does and says, but even with the extra scrutiny he gets because he's outspoken against the government on so many issues this kind of thing is the worst you can point to?