Intrade might welcome a bolus of new participants.
They would need rig up a mechanism by which the performance of Freepers identifiable by screenames can be tracked separately from the rest of the Intrade traders.
Freepers are wildly optimistic prognosticators. Back in 2006, Intrade had an 80-90% prediction that the Democrats would take back both the House and the Senate. Freepers were having none of that. Only 7.2% predicted it.
This starry-eyed Freeper optimism can be seen in Presidential candidate choices. It is easy to find Freepers that think that Duncan Hunter has a chance, whereas at Intrade the chances of him winning the GOP nomination are 1000-1.