As i know, one from the longest running, signature campaigns is Bitmixer. Probably no one has such a good reputation as they have.
I realize about the longest history of bitmixer, but about for mentioning their signature campaign in here it's a bullshit ever I have seen to this day..... and what the hell is that? isn't caused by their signature campaign but they're building their own reputation with their service.
This is the most reliable and best bitcoin mixer of all time. They had already built their reputation and base upon their feed backs.
Bitmixer has been the best mixer and they are also offering some opportunity to invest to their sites.
So you can be also their investor if you want to get some profit too.