Not sure what's happening. The last few days I've been getting loads of subscription update emails, but when I come to check, no new (or not as many) posts to subscribed topics?

e.g. today I've had 20 notifications of new posts, but there have only been at most 10 responses to topics I'm subscribed to at the mo!

I am not sure, but I think that when someone edits their post it sends you a notification which might account for some of the emails you would of received