Why is a real comedian following me on Twitter?

[James McShannock]

I only recently opened a Twitter account to post my jokes so I obviously find it strange that an apparent celebrity/actor/comedian would have any interest in what I say. I read somewhere that PR marketing team for celebs sometimes do this, is there any particular reason?
When I say 'particular' reason, I mean whether celeb marketing teams would take ideas from other peoples work by following them.