Automotive
Unless money is not an issue, it can really be time consuming and stressful to find a repair shop. One site in the US that is getting a lot of attention is RepairPal. Set up by a couple of auto enthusiasts and entrepreneurs in California, to make it easier for car owners to access a comprehensive auto shop directory and more. Their encyclopaedia page is filled with a lot of useful explanations of car related terms. Found it really useful.
You can get fair auto repair estimates in a few steps by choosing your car make, model, year, the service type you are interested in (for example, Timing belt replacement) and finally providing your zip code. Customers can then rate the shops as per their experience.
Signing up allows you to access a number of features including a place to maintain your car records. The will even email you when your car service is due. Definitely a useful site for all car owners.