I mean, if you have free time then go for it.

If you're serious about making money off of it then I suggest you think otherwise. Most of the coins that are offered on Freecoins have very little value, which is why they are being offered for free in the first place. The coins with value being offered generally are offered in such tiny quantities that it's not worth anyone's time.

Treat it as a faucet, and nothing more.