I don't participate in sponsored activities myself, because I feel uncomfortable asking for sponsorship. Instead, DH and I make regular payments to charities of our choice.
I have no objection to sponsoring friends, but whereas in the olden days, they would approach you then thank you personally, I feel a bit miffed by the impersonal way in which the round robin emails (inc the thank you one) are sent.
Moreover, I've been asked to sponsor 4 different people for Race for Life so far - and can't help feeling that somewhere along the line, I must be creating more work for somebody within the charity, entering my Gift Aid details 4 times. Unless it is computerised - does anybody know?
It would seem so much easier just to sponsor one person a larger amount, but hey, guess what? That doesn't win any friends.....
Rant over.