Woah, what the heck. I just checked mine and im sitting on 27.5 gb of cache. My huband was sitting on 16gb.

If anyone is curious, my husband and I never manually cleared the cache for Connect. When we're done using the app we both normally just press the phone home button, leaving Connect listed in the active apps drawer, and then clear it later on in the day (this is probably whats adding to the cache).

As annoying as it is to have 30gb of cache, I still wouldnt switch to a different app. The ability to block users, communities, and entire instances is just too good to give up.