A 12 year old explains the facts of life to her mother:
The Internet is a very beautiful thing if used properly.
When a person loves a funny video very much, he or she may want to share it with someone special to them. This is called linking and if done properly, it can bring people together in a very special union of love: usually the love of sneezing animals, or bed intruders, or Bill O'Reilly having a temper tantrum. But it's important to be sparing when you send your links. You don't want to become the neighborhood outbox, constantly forwarding yourself around. Nobody wants that kind of reputation. Trust me, you do not want to be known as a "spammer."
Now when someone has a lot of things they want to say, they may want to try blogging. Blogging is a kind of social intercourse, and should only be tried after years of experience with the Internet. Think of a blog as a newspaper that people actually read. It's a very personal thing, and you need healthy boundaries. For example, you can't go around blogging about the time I peed my pants when we went to see Ice Age like you told that woman in line at TJ Maxx yesterday.