Unfortunately...a lot of folks have attacked Klayman...quite frankly the more PhonyCon Liberal have attacked him. Pretty much he has been right
Too many on our side follow the Liberal Media spin on everything and attacked those who are actually trying to do something to counter the left and Democrats. Too many on our side attacked the Obama Eligibility supporters...directly aiding Obama in 2008 and 2012...and helping Obama get elected
The biggest "problem" with Klayman is that he's not partisian in his attacks. If you read all the media stories about him during Clinton's terms, you'd think his given name was "Conservative", as that was always prepended to any description of him, to attempt to portray him as nothing but a right-winger attack dog. Along came the Bush admins, and he kept doing the same stuff he'd been doing. You found lots of antipathy for him at this site then, which I always thought was rather short-sighted and myopic. Now that he's back attacking democrats (because that's where the power is), "our side" seems to like him again.
Sadly, he's had to work in an extremely corrupt environment (the American legal system), so he hasn't been nearly as successful in his efforts at shining light in dark corners as I wish he could be. His efforts do shine a light of sorts on the corruption of the legal system though, as well as the executive, which I think is commendable regardless of the ultimate outcomes of individual cases.