Dear Mark Zuckerberg
Thank you so much for bringing us Facebook Chat!
I have always wanted to talk to my friends over the computer in real-time, and thanks to Facebook Chat, I now have that opportunity!
How much better-off would the world be if, ten years ago, we had had this technology? Alas, there was no such thing until Facebook Chat came along, as evidenced by our pitied attempts to instantly message one another previously.