This looks like an easy $10 for anyone who's not tried BF poker.
Terms & Conditions - $10 Poker credit
1. To be eligible to receive the $10 cash credit into your Betfair Poker account:
a) Opt in to the promotion
b) Register a Betfair Poker account
c) Create a Poker alias
d) Play one hand of Poker between 00.00 (GMT) on 27/05/2010 and 23:59 (GMT) on 10/06/2010.
2. This promotion is only available to customers who have never previously played at Betfair Poker. Existing Betfair Poker customers are not eligible for this promotion including those who have created an alias for the Betfair Play for Fun product.
3. Only United Kingdom residents are eligible for the $10 cash credit.
4. There is a limit of one credit per customer.
5. If you are eligible to receive the $10 cash credit, your account will be credited within a maximum of 72 hours.
6. Standard Betfair Poker Terms and Conditions apply.
Incidentally although I never play there I'm informed by more than a few people that the standard at Betfair is delightfully poor.