Different refresh rates, different payouts, different usage. It's hard to keep track of them all if you want to juggle multiple sites at a time.
http://bit.makejar.com/ is a site that lists the allegedly best BTC faucet sites, ranked, and listed with their details (including method of payment, minimum payout, and average Satoshi winnings per click) in a neat table. Everytime you click through the link the time starts and keeps track of how much time you've left to claim your next round of Satoshi, so all you have to do is pick the sites that you like.
*Be advised, the links on the list are referral links, and also the upper listings are generally more reliable than the bottom ones. New sites are listed frequently, but as much as the admins bother to filter scams out, there's always the chance even for a reliable site to turn rogue.
http://bit.makejar.com/ is a site that lists the allegedly best BTC faucet sites, ranked, and listed with their details (including method of payment, minimum payout, and average Satoshi winnings per click) in a neat table. Everytime you click through the link the time starts and keeps track of how much time you've left to claim your next round of Satoshi, so all you have to do is pick the sites that you like.
*Be advised, the links on the list are referral links, and also the upper listings are generally more reliable than the bottom ones. New sites are listed frequently, but as much as the admins bother to filter scams out, there's always the chance even for a reliable site to turn rogue.