Follow-up to my post of 20th June:
"RalphTheWonderLlama writes 'The trials of NebuAd by Charter Communications were halted after it gained the attention of Congressmen Ed Markey and Joe Barton. The online behavioral targeting system has been called 'a 'man-in-the-middle attack' and various other unflattering names' but would certainly be an easy way for an ISP to cash in on client profiling.' PaisteUser points out MSNBC's coverage as well, according to which the ad-insertion scheme was dropped because of 'concerns raised by customers.'
Read more of this story at Slashdot.