I know what it does, and it has blocked a few programs here and there for me, so I actually like it. It's probably saved me from some headaches, but that I'll never know, thankfully. I just didn't know if your comment about disabling it was due to it using a somewhat substantial amount of data, substantial amount being relative, of course, or if it was due to a possible conflict when using Avast. I know some programs/apps don't play well together.
I believe the Anniversary Update is like when you upgrade, say from 7 to 8 or 8.1 to 10. It keeps your files but installs a new OS, for the most part, so you wouldn't see any past Windows updates.