update: now 290 member participating in the Signature ad campaign...
289 actually, you see the column number, but you missed the fact that the number of participants started from column number 2, column number 1 is for the row's name. And to be more specific there are around 249 give or take one because from that 289, around 40 are rejected participants.
Can i join on the avatar campaign only? i would love to put that image on my avatar.
No, they don't allow it. You have to wear the sig and avatar together they don't have sole avatar campaign