Ever have a situation where you need to find someone or something quickly on the web?
A couple of weeks ago, I was working in my office when I noticed some water coming through the carpet at the base of the stairs (my office is in the basement). I quickly checked around and saw that the water heater was leaking - water on the floor of the closet where it's kept and leaking out of the T&P valve! I put some towels down to dry up what was on the floor and a bucket to catch anything additional. Then what to do - call the plumber, naturally!
Of course, since we moved into our house 3 1/2 years ago, we haven't needed a plumber, so don't have anyone we work with or that I knew to call. I hit the web and searched for 'plumbers' and my town name into Google and got back nearly 26,000 results. Fortunately, there were some relevant ones on top, and several of them were Directory services.