BBC NEWS | Politics | Browns join Twitter war over NHS
Gordon and Sarah Brown have joined a Twitter campaign to defend the NHS, which is under fire in the US.
The prime minister posted a message on the welovetheNHS page after critics of Barack Obama's health reforms dubbed it "Orwellian" and "evil".
Mr Brown said the service "often makes the difference", and added "thanks for always being there".
Meanwhile, a Tory MEP who told US TV he "wouldn't wish" the NHS on anyone, has been rebuked by the party.
Conservative officials said Daniel Hannan had done the NHS a "disservice" by giving Americans "such a negative and partial view".
The Twitter campaign has attracted more than a million followers and thousands of messages of support - including tweets from Sarah Brown, who wrote welovetheNHS "more than words can say", Health Secretary Andy Burnham and former deputy prime minister John Prescott.