Link building is a sure fire search engine optimization strategy for getting better rankings in the search engines
Some times in link building one have to be creative to get those high PR link juice coming to you. Here a little trick that worked a couple of times for me.
Find a web design company with a decent Page rank Lets say 4 or 5 on their porfolio page.
If your website is well designed, unique and you think it may provide value to the design company simply ask the webmaster to put you in their portfolio page.
If the webmaster agrees they get to add a site (yours) to their portfolio page for free, building more credibility and you get a link to yours.
If their portfolio is categorized by industry even better