It sounds like you're surprised that you didn't get an e-mail when ... nothing happened ... with your site. I must be misunderstanding something, because if we sent mail to all of them whenever we did anything to one of them, we'd be bigger spammers than Spamford Wallace and all the descendents of Nigerian warlords put together. Just do the math: 3,000 category updates per day times half-a-million unreviewed submittals!
I've done something VERY unusual (for me) this week. I picked an underdeveloped category and resolved to review ALL the sites, without exception, and list them in ALL the places they should go. If I can view it with a standard-conforming browser, and read it with an English-only brainstem, then I'm reviewing it (listing if appropriate.) If you had a submittal in a subcategory there, and you see "page updated", you'll know your site was reviewed, and if it's not listed you can know I ain't gonna list it.
You may be assuming that's what every editor does every day, but I can't remember the last time I did it in any significant-sized category -- it is NOT the normal mode of operation for the most active editors.