I don't know that there is some other Bitcoin related forum that is so popular, with so many users and so much quality like this one. There've been some other attempts but without success, they just couldn't attract the users. So, don't waist your time looking for other ones, spend your time here. We are like the big family. 
Bitcoingarden.tk is quitely known before but i don't think they can surpass the popularity of bitcointalk since we've got complete information outhere and we can also earn money on here various ways. And anything else aside from this furom i wouldn't look for another one to stay on since it was bit hassle to jump in, jump out and much better just to keep my head here since im so satisfy for what i can read here. Maybe their would be another furom would came out in future but surely they will enter a slappy road first to come to the level of fame as same as bitcointalk have.
Other forums are incomplete because there haven't a Signature campaign that can make money for us.
We are know that the signature campaign is a great way to make bitcoin for free.
And that is the reason this forum is more popular and for the same reason people are here as they get an opportunity to earn bitcoins from signature campaign and if signature campaign disappears in future then many users will stop visiting this forum for sure.
