Links can be in the form of providing source link for the information you quoted or simply by including the blog or websites link in your blogroll or web favorites.
The more higher links you can have, the higher visibility yo can get.
You can even create multiple blogs based on different interest. One of the most impressive example of this is onegassybaby (http://www.technorati.com/people/technorati/onegassygbaby). This fine lady manages 3 blogs, namely: STACIE'S BLOG (http://www.adevelopingblogger.com), BLOGGER INTERVENTION GROUP 9http://www.bloggersinterventiongroup.net), and Where am I going? Who am I? (http:://whereamigoingwhoami.blogspot.com).
Improving your link can also happen by simply asking other blogs to link you in their articles. One the most fine example of this is Eric Folstad's Speedcat Hollydale Page (http://speedcathollydale.blogspot.com). By the way, I thank Eric today for adding me as of his favorite blogs today. Salamat higala!
Want to be added in my links? e-mail me at email@example.com. Just e-mail to me your URL, Blog Title and Description. I'll have it reviewed as soon as possible. Thank you!