Zuckerberg wrote a program called "Facemash" in 2003 while attending Harvard University as a sophomore (second year student).
According to The Harvard Crimson, the site was comparable to Hot or Not and used "photos compiled from the online facebooks of nine Houses, placing two next to each other at a time and asking users to choose the “hotter” person".
Entertainment Weekly included the site on its end-of-the-decade "best-of" list saying, "How on earth did we stalk our exes, remember our co-workers' birthdays, bug our friends, and play a rousing game of Scrabulous before Facebook?
In late 2007, Facebook had 100,000 business pages (pages which allowed companies to promote themselves and attract customers).
These started as group pages, but a new concept called company pages was planned.
After registering to use the site, users can create a user profile indicating their name, occupation, schools attended and so on.
Users can add other users as "friends", exchange messages, post status updates and digital photos, share digital videos and links, use various software applications ("apps"), and receive notifications when others update their profiles or make posts.
[...] I think it’s kind of silly that it would take the University a couple of years to get around to it.