POPi (Point Of Presence)
POP as a Point Of Presence is a telephone number that gives users dial-up access to the Internet. This term is also used to describe an actual connection point on the internet's backbone.
POP (Post Office Protocoli)
POP as a Post Office Protocol is a protocol used by mail clients to retrieve messages from a mail server. It comes in two flavors: POP2, which requires SMTPi to send messages, and POP3, which can be used with or without SMTP. You need to know this because an e-mail account is often referred to as your "POP account."
POP (Photo -or- Picture On Profile)
Indicates that you have posted an image of yourself on your profile.
