This article from Reader's Digest is fabulous! It tells 13 things a burglar won't tell you, but they did tell Reader's Digest. There is also a link to 8 more things on the page, so be sure to click that too. Here are some examples:

1. Of course I look familiar. I was here just last week cleaning your carpets, painting your shutters, or delivering your new refrigerator.

2. Hey, thanks for letting me use the bathroom when I was working in your yard last week. While I was in there, I unlatched the back window to make my return a little easier.