FutureLab
Access 
The site content is completely open and free to the public, and users' participation is encouraged through several options and tools; many text and pdf files (for a bi-annual magazine) are available, while links and other resources are well presented
Fee Policy 
Access is completely open and free to the public; actually, users participation is promoted through a variety of tools (article and idea submissions, comments, sponsorship, etc.).
Free Retrieved Material
Futurelab's bi-annual magazine, Vision, can be downloaded for free (as pdf file), while other papers, presentations and tools are also freely available
Linking Richness
A good quantity of links are provided, pointing both to external publications/resources and internal sections -- always well organized and easy to follow