I believe myself to be quite lucky.

What are the chances of his happening? - this is more than just the law of averages.

I visit many websites and just happen to be the millionth (or whatever) visitor - can you believe it? All I need to do is just click for a chance to win something.
I'm still waiting to hear back from all of the ones I've responded to, to notify me of my winnings, but have been fortunate enough to sign up for many incredible offers, and have saved loads of money on the normal price - and it's not cost me too much.

It's also interesting to take part in their surveys - I don't mind sharing with people which bank or credit card I use. One site even said that the winning number could be contained in my credit card number - all I had to do was enter it, so that they could check. Unfortunately I was a couple of numbers out, apparently.