To be fair, that piece on Soros from 2005 was written by his co-author, Richard Poe. But it was hosted on his website and certainly many of the other groups contributing to McCain are categorized under the "left" and "radical" labels that he has on the DTN website. And then there are the list of liberals working as directors and advisors for the Institute, as you pointed out. Don't you always look to Berkeley professors and the Brookings Institute for conservative and moderate voices? LOL You won't find any!
I think David is splitting hairs. He says, Yes, McCain took money for a project with which Soros agreed but that doesn't mean that McCain was doing it because Soros gave him the money. There seem to be several policy issues on which they are in agreement -- should we feel better about it because McCain pursues liberal policies purportedly on his own volition? I don't!
Like you, knowing that McCain is probably not a useful idiot or puppet, but more likely one of the Soros et.al. true believers doesn't make me feel warm and fuzzy about him. In fact, that makes him a lot more dangerous IMO.