WASHINGTON (AP) — Internet users seeking free gifts, including "virtual" money for use in online games, have been enticed to send e-mails to members of Congress to express opposition to President Barack Obama's health overhaul effort.

The letters would be generated to lawmakers from a Web page run by Get Health Reform Right, a coalition of 10 insurance industry groups that opposes Obama's health overhaul effort. Officials of the Blue Cross/Blue Shield Association, which runs the coalition, said it did not know where the ads came from and that its contract with an Internet advertiser specifically prohibits financial rewards for letter writers. They said the coalition's activities were being temporarily suspended while they investigate.