For many years, in the US, there were claims that Comcast was doing traffic shaping on its network, slowing down or even blocking certain types of traffic.

Despite increasingly sophisticated evidence, Comcast always denied it, until the Associated Press finally presented proof. Comcast still tried to dance around on definitions, but finally came clean. In response it got a wrist slap from the FCC (which it's fighting in court), but it has become a lot more transparent in its traffic shaping/filtering practices. There just isn't any logical reason why any ISP should be less than forthcoming about these issues.

Slashdot points us to the news that a new study of Israeli ISPs shows that, despite denying it, many are traffic shaping P2P traffic, often using deep packet inspection. Apparently, Israel's Communications Ministry is already looking into this and determining if it requires any action on its part. It makes you wonder why ISPs think it makes sense not to explain what they're doing to customers.