I dunno about here..as in PJ but I use it at work. lol
Worst program ever.

lol @ chat. It has a instant msging capability though..lots of other uses.

Courtesy of wikipedia..

Lotus Notes provides integrated collaboration functionality, including email, calendaring, contacts management, to do tracking, instant messaging, an office productivity suite (IBM Lotus Symphony), and access to other Lotus Domino applications and databases. Lotus Notes can also be integrated with additional collaboration capabilities including voice and video conferencing, online meetings, discussions, forums, blogs, file sharing, microblogs, and user directories. In addition to these standard applications the organization may use the IBM Lotus Domino Designer development environment and other tools to develop additional integrated applications such as request approval / workflow and document management.

NO. It has databases of information that can be accessed by many users. Kinda like a storage. yes it has email/msging capability as well, but that's so out dated.

There are tutorials online.... Every company has different purposes for it..its pretty versatile.