I have a blog with hundred of pages targeting super-low competition keywords from various niches. I'm new to the link-pyramid thing and wanted to try creating backlinks using the method, but my question is: How many web 2.0 properties do I need for these 100 pages? Can I create 1 blog and drop a link to 100 pages - will that count as backlinks for those pages? Or do I have to create 100 properties, resulting in one property for each page? Any thoughts on this?