Little Blue Friend

They were commonplace now. Little blue robots, rolling around everywhere you go, doing your shopping, your chores.

I've decided not to jump on the trend, however. Today though, I'm being accompanied, everywhere I go.

It started while I was shopping. Slowly, it stalked me. I didn't think much of it until I noticed it was carrying no shopping. It left when I did, and followed me on every little errand I ran.

It isn't smart enough to do this of its own accord. It has learned this behaviour, through GPS mapping.

My real stalker has taught it this, but why?