There are many signature campaigns for full members where slots are empty, and new signatures can be join. The bounty is mostly a scam, but some essential reportable managers do not scam and provide excellent service. If you want, you can join their boundaries after watching. I see that you are currently a full member, so I think it would be better for you not to participate in the bounty. However, if you want to participate, you can prepare your social media and join the bounty.