I've never heard of signature campaigns before. Is this something specific to Bitcoin Talk, or is it something that happens in all types of forums?
If you want to earn a lot of Bitcoin from just faucets then forget about it. Faucets will not make you rich. Instead, you should focus on ranking up your Bitcointalk account. With a good Bitcointalk account, you will be able to participate in high paying signature campaign. What's signature campaign, you ask? Basically, you rent out your forum's signature space (right below every posts you make) to people.
If you still want to look for high paying faucets then ...
Excuses me for advertising my site ...http://bitrevenues.com/ and
http://freebitcoinlottery.xyz/ may be the sites you are looking for. Do note that the two sites is a free lottery game. Which means, you may or may not earn any Bitcoin from it. However, if you are lucky, you may win a lot of Satoshi. On average, we pay out 300K to our winner.
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250 satoshi 
- 500 claimed
