The truth is that the entire premise of PR and link building is outdated now. It leaves new sites at an extreme disadvantage and favors older sites which in many cases aren't all that great. My site is basically a large image archive, not a resource for tech articles, tutorials, or much text based info. Even if I were to spend huge quantities of time writing such articles it wouldn't get me a thing, since these types of tutorials exists by the hundreds already..nobody reads em and nobody links to em. I have stopped bothering to contact webmasters for links because it's a complete waste of time and has been for at least three years or so from my experience. Most of us have to run our businesses and can't hire full time in-house link developers or spend huge quantities of time in fruitless emails to webmasters. The whole system of link exchange is DOA and needs to be scrapped, or at least weighted much less heavily than it is today, otherwise what we have are hermetically sealed very static search results.