If you’re in the market for a nanny or a plumber close to home, chances are you’ll consult the Yellow Pages or ask friends for recommendations. You might even check community sites like Craigslist or Angie’s List, but Google Inc. and eBay Inc. would rather you use them.

The two prominent Internet companies announced an advertising partnership Monday that aims to put buyers in touch with a wider variety of sellers, such as the neighborhood exterminator, math tutor or roofer.