I recommend visiting twister's link. It's a really nice and clear summary of the different signature campaigns here although sometimes the information isn't up to date.

Quote from: bitcoin_bagholder on April 25, 2015, 03:20:54 AM

Put "Bit-X sucks" in your signature space.

Strange to see Bitmixer is also there. Other than their slightly low payouts for senior members and up, their signature campaign has been generally quite well received since everything is automated and payments are usually processed quickly.

Quote from: retes1234 on April 25, 2015, 03:28:06 AM

Quote from: lucasjkr on April 25, 2015, 02:01:50 AM

Was just removed from the Bit-X campaign, not for spam, just due to them prunning membership.... What's the best campaign to join now?

the highest pay per post campaign as of now is DaDice.

here is the thread: https://bitcointalk.org/index.php?topic=973949.0

While DaDice is currently the highest campaign that pays per post, there are also fixed payment ones that might offer a higher rate depending on your posting habits. Most of these have stricter requirements compared to typical signature campaigns. CoinRoyale, for example, pays 0.04 BTC for a minimum of 20 posts per week:

http://bitcointalk.org/index.php?topic=947043