FusionCash is quickly becoming one of my favorite sites. They have over a million members and have reportedly payed out over $1.6 million since June 2005.
Upon signing up, they'll send you a confirmation email to the email address you signed up with. Make sure you confirm it so you can access your FusionCash account. After this you are automatically given a $5 bonus as a thank you just for signing up.
The thing that I like about FusionCash is that 98% of their offers credit instantly, so you don't have to wait around for them like on other sites. FusionCash also has higher payouts for offers than other sites.
FusionCash's referral system is also different from other sites I've come across. You get $1 for a referral sign up, $2 for a referral completing one offer, $5 for a referral reaching payout.
The minimum to cashout at FusionCash is $25 and you can be paid by check, PayPal or direct deposit. They process check on the 20th of the next month you cashed out at. For example if you cashout at the end of August, you'll receive your payment on or before September 20th.
FushionCash has a great forum with thousands of members to answer all your questions and give you tips. Overall FusionCash is clean, professional, and a great site to make some extra cash.