Properties willing to take a chance on a small and potentially questionable industry may be able to tap a new source of sponsorship revenue.The category: hydration therapy services.The services use I.V. hydration, vitamin infusions and injections to provide relief from everything from the common cold and the flu to hangovers, migraine headaches, jet lag and fatigue.Most of the clinics position themselves as health and wellness companies, while others focus purely on hangover relief.Companies inc...