See How Far You Have Come - Read Your Old Posts
I did something entertaining this morning and went back and read some of my posts from when I first joined BiggerPockets, and boy did I know absolutely nothing about real estate investing! I would encourage everyone to go back and take a look at your old posts. Even if you were not a new investor when you joined it will be interesting to see how you market has changed, how your investment strategy has changed, and how the BP community has evolved.
Oh, and this is not an invitation to go read my old / ridiculous posts :)