There are literally bots that used to abuse the faucet, sure there is some prevention and I am sure there used to be a lot more and there are less right now (which is something we can't really calculate because if they are any good freebitcoin will not feel it, if they are bad freebitcoin will ban it).
For getting faucet, you should pass the captcha. I don't think bots are able to pass captcha. So, abusing the system is not as easy as you think.