Have discovered this recently through reading BB on my phone. Reading on phone is the best way to do this but I suppose it could work on a PC. Long time readers of this forum will have greater success. Threads involving theology discussions work best but political threads work too, though are not as challenging. 1. Pick a thread with many responses, say 20 or more posts. 2. Scroll down to the last post. 3. Take care not to see the author of the post. The idea is to read the post and try to guess who authored it. (The limited viewing area by reading on a phone is ideal). Continue by scrolling up a bit more until you see the next post, but not the name of the poster. It's fun! A good thread to try this on is The Casual Gospel. Sent from my Motorola Droid Turbo using Tapatalk.