Do you twitter? Have you ever tweeted 'Going out for the evening, back late, so signing off', or 'leaving for a meeting now', or 'having a lovely coffee with Barb and Pete before the concert', or something else which lets out that you are not at home?
If so, then you might not be doing yourself a favour. Letting people know you are out is, well, letting them know you are out, and if the wrong people get that information, you could come home to find you have fewer possessions than you did when you left.
Web site www.pleaserobme.com has been brought together to raise awareness that location sharing might not always be a good thing. Food for thought.