Whilst I accept it's distracting and sometimes downright rude, you cannot really complain overmuch.

You CHOOSE to be there, either as an unpaid guest or a semi/professional.

It's not as if someone has come into your house to photograph you.

With the plethora of smart phones and tiny camcorders being 'pushed' by manufacturers as 'cool', it is inevitable people with use them.

If you don't like it then stay away - it's a fact of modern life.

Personally, I hate the bloody things.