The faucets have run empty because of the fairly huge payouts they were offering a little while ago (0.2 to 1 PMC). I believe there is still some money in the faucet's cold storage wallets (?)

It's not worth mining on an ordinary PC -- even with the very low difficulty, your computer or GPU just can't compete with ASIC's when it comes to SHA-256 hashing. For instance, I have a block erupter USB ASIC hashing Premine right now for fun. It costs about $15 to buy one, and it's probably 10x better than your GPU or 100x better than your CPU.