We've just had two threads closed for wandering off topic. I'm sure this was meant well, but does it really make sense? I had relevant posts on both threads. On one of them almost all the posts were relevant. Why should the rest of us be punished if a few people want to play post tag?

I don't want this thread to degenerate into mod bashing, but I want to pose a legitimate question. How should mods deal with this problem?