In SEO terms, a big deal is made of the practice of building links. This is because the major search engines view each link as being an indication of the quality of your page.
There are thousands of sites out there offering tips and tricks for using CSS. But how do you know where that information is coming from? Who says the people writing these “tips” know what they’re talking about? For all you know, it could be someone who has not clue what CSS even stands for, let alone how to use it effectively.