There is one feature that I wish both Facebook and Twitter would implement, and that’s some sort of “bookmark” that is accessible across all devices.  I can’t tell you how many times you’re reading both services on your desktop, and then after a period of time you login on a mobile device (phone, tablet, laptop) and you only want to see where you left off on the desktop, or visa versa.

It’s trivially easy to implement a button that would record the current position in your Facebook or Twitter feed, which would allow you to pick up at that point on another device at a later point so you don’t have to scroll back through to find where you left off.

With the THOUSANDS of engineers at Facebook, you’d think someone would be able to figure this out.  What are they doing over there?!