Researchers at St. Louis University are paying volunteers $3,500 and a free stay at local hotel for 12 days -- with catered meals. The catch? You have to be willing to be exposed to the flu in order to test a new flu vaccine. Volunteers will either get a vaccine shot or a placebo and then get exposed to the virus through a nasal spray. If you don't mind possibly suffering through a bout of the flu, this seems like a pretty good deal. According to reports, "The university spent about $350,000 to convert 24 hotel rooms at the Salus Center into a quarantined medical unit, equipped with reading nooks and game tables for socializing.” (WFSB)