My husband uses the Internet for a myriad of reasons. He emails, he keeps up-to-date with news, theology, Christian Thinking, music, he orders things from the Internet, etc.
He also uses the Internet to build and maintain his friendships. He has a group of very good and close friends, without them he would flounder and sink (especially this year!). He keeps in touch with one friend from his Bible College days. They mourn, commiserate, laugh, insult each other, tease out theological truths etc. The large bulk of their friendship is conducted via the Internet due to the geographical distance between them.
One thing they started about a year ago is to post on their blogs songs that they like - they posted 25 each. After that they have posted 15 books. They take it in turns and write a little blurb as to why they like the song or book and/or what it means to them. Apparently, they have a lot of other catergories ready for future blogging. I am quite impressed by persistence in these particular blogs.