1. A worldwide virtual website on which you create pets. Using these pets you can do the following:
chat on boards (where you can get reported for abuse)
submit work for art, poetry, newspaper article and storytelling competitions and recieve a 'trophy'
play a wide variety of many many games to earn neopoints
join a guild which is a group of people with the same interests as you e.g a simpsons guild
fight with other pets online and take part in wars which the website creates interesting plots for
make neofriends by sending neomails
and much more fun stuff
WARNING As the neopets boards are monitered due to it being open to kids, users often find themselves frozen for not using the boards properly. This leads to hostility towards neopets from people that have been frozen before. It is also seen as a waste of time, which it may be, but a FUN waste of time.
I just love the Help Chat on neopets.com - the people are so friendly and have great avatars