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you can follow all participant here! but don't ask anyone to follow back, if you do it with sincerity, then surely they will follow you.

that's what I ever do whenever @xpilar holds its contest
I just announce that I've been following all these contest participants, hopefully we can to be friends and meet again at next contest.

I usually do after two days of the contest, because many participants have entered.

This is a competition, seeing your mail as spam @aarony

very nice

very good

Good idea.