No such thing as free lunch and no such thing as free bitcoin. No one will give you anything for free and if you want to get some bitcoins you have to invest your time and money, no matter if you are participating in signature campaign, if you gamble, trade or something else. Even faucets are not for free.
Yeah, nothing is free, but about bitcoin sites, i saw most of the faucets sites are always use this sentence Free bitcoin. Even everyone know that no any site could give us free bitcoins and if they pay because we are working on faucets, but i think faucets is totally wasting time, signature campaign is more than better of it.