The first one is in 2011 but I don't know we can considered it as a signature campaign from a company or only a signature campaign from a member.
It's still a signature campaign, isn't it?

Now I am not good with data, if there was opportunity, I could study and get some knowledge about data, statistics or data science. It seems interesting.
I could as well go ahead and check out the impact of the emergence of the OG sig campaign managers (Hhampaz and yahoo62278). Just imagine for a moment, what It would be like in the last 4-5 years without those two guys.