Bikes bikes bikes!
Paraphrasing from Isky's email:
There are Two Common Bikes. I ought to have labeled what used to be my green bike (bike #1) upon recovering it. Both it and the red bike are commonly used (obviously not in the last couple weeks) bikes by me and many people I know. Ask me to introduce you! If anyone wants to borrow either of them ask me about it and i'll give you access to a bike lock (because i guard the key) that fits around them both! Take your visiting friend from out of town for a ride! Get yourself a burrito from a more delicious taqueria far away, etc!!