If you're offering a "service" and not simply participating in campaigns, I don't see how you could run into trouble. For starters, you're not likely to end up in the same campaign as anyone dumb enough to use your address... and secondly, why would anyone use your address in the first place??!?
That means they would do all the work and you'd get paid!
Good question.
For example if random people or people that really hate you so much copy paste your address that you use for join signature campaign and he join another campaign or bounty with a lot of account and then people report if you use the same address with people that use your address and get evidence for try to cheat bounty campaign, will you get instant tagged?
This people that use your address will try to make you got red tagged as much as he can because he hate you because you report them before in the past.
I mean this people just use our address to
ruin our reputation because he hate us and doesn't mean he want you to get paid and if i run my service and that people use to ruin my reputation that will be bad.
sorry if this too hard to understand, i try to explain it as good as i can.
I dont plan to join bounty or signature campaign, i have main job and i cant online everyday because busy in real life for now. But i want offering service for part time job and earn extra income for it. Thats why i asked it.