Recently I saw a suspicious activity in the reputation history of one user. So I flagged one of his answers and wrote the following message:
I see a suspicious serial upvotes in the reputation history of this user:
Mar 31 (4 upvotes within 20 seconds)
Feb 15 (7 up. in 2 minutes)
Feb 3 (6 up. in 30 seconds)
Jan 28 (5 up. in 1 min)
Jan 11 (8 up. in 1 min)
Dec 30'11 (6 up. in 3 mins)
Dec 14'11 (7 up. in 1 min, then there are another 4 up. in 1 minute)
Dec 1'11 (8 up. in 1 min)
Nov 14'11 (8 up. in 2 mins)
Oct 5'11 (9 up. in 7 mins)
Sep 28'11 (5 up. in 2 mins)
Sep 18'11 (9 up. in 7 mins)
Sep 16'11 (5 up. in 4 mins)
My flag was marked as helpful and… the flagged answer was deleted without any further actions to the user's reputation. To be honest, I expected a little different reaction: either "declined flag" or decreased reputation, but not the answer removal (actually I don't even remember whether that answer deserved to be deleted as I just selected one of his answers to place a flag).
So I'd like to know:
1. Does mentioned activity look suspicious?
2. What could be the reason of mentioned flag processing?
3. What am I supposed to do next?
p.s.: The link to the user's profile is intentionally omitted until Moderators ask to disclose it.