Last month we saw the launch of TechCrunch50 winner RedBeacon , the startup that lets you book local service providers directly from the web. Today it's getting some strong competition from a new startup called Thumbtack , a local service booking engine that's looking to offer both a comprehensive directory of providers and a greater degree of trust than you can find elsewhere. Featurewise, Thumbtack is a mix between RedBeacon, Yelp, and OpenTable. Like RedBeacon, it lets you sign onto the site and issue a request for a service, which service providers can then bid on. CEO Marco Zappacosta says this portion of the service is nearly identical to RedBeacon, complete with a bidding engine for providers to set pricing.