tedster - 1:02 pm on Sep 13, 2012 (gmt 0)
Eventually, yes - such a forum is not likely to continue to rank. Right now it is probably benefiting from a "freshness" factor, which can create a temporary loophoe for spam.
Google usually does NOT take immediate manual action based on spam reports. They do use the reports to understand how the spam made it past the algorithm's current safeguards - and then change the algorithm so it can catch this TYPE of spam,not just this single example.