Friending People You Just Met

What is the etiquette for friending people you just met? Just edit this page and add your thoughts.
*If you met once briefly, it can appear that you're hounding that person. You may come off too strong. If, however, you are specifically asked to "friend," you're in the clear. 
*It's ok, but send them a message along with the request. This is a little like asking someone out on a first date, but way less threatening. The same logic applies: Send the message soon (within a day or two) after your initial meeting, so the person has some idea who the heck you are. 
Category:Facebook Etiquette
Category: Friending