I'm not near as active on it as I used to be since I quit drinking as much. But on those nights I do get to go out and have some good brews, I post them to keep up with what I have and have not drank.
Of the 760 different ones I've had, I've really been amazed at how many I can remember whether I'd had a particular one or not before. Like when building a 6 pack in a craft beer store, or scanning over a menu at somewhere like Tacomac that has 96 beers on tap. Every now and then I have to resort to Untappd to see whether I've had a beer before or not, but most I immediately know "yep I've had that one before" or "nope hadn't had that one yet".
I usually always try to drink one I haven't had before, but last weekend at Tacomac I had to get another Promenade by Hutton & Smith. That was a damn fine beer. I was chatting with a couple at the bar and they recommended I check out Hutton & Smith's brewery/taproom or whatever it is in Chattanooga. I'm gonna try to make my way there one of these days and check it out.