There are a whole load of ways to get your website out there, if you’re on a bit of a hits kick. Getting your link in web directories (dirmania web directory, which has useful categorization and offers free listing), link exchanges, forums - they’re all about exposure and getting page ranks up. Mind you, they’re good ways of finding some great sites to read, too, and awesome resources online.
Why might you want more exposure? To earn more, I suppose, from all those paid blogging programmes. Better opportunities, more money. The more widely-known and better-read your site is, the more advertisers are willing to pay for space on it. And just to connect with a wider community… to sell more, if you’re site sells products, to get more opinions if it’s a forum or feedback site. Diversity, and all that!
To be honest, I’ve never been a big one for putting my site in link systems and trying to build up visitors or my hit statistics. I don’t really assume many people are that interested in my own mundane musings. But I can definitely see how these would be invaluable tools for, say, corportate websites or websites that focus on revenue-generation as opposed to random and often meaningless self-expression. Still, it’s nice to feel you’re reaching people.