diigo is a social bookmarking site. It allows you to collect, highlight and remember your bookmarks. It also allows you to share bookmarks between friends and publicly.
These is my diigo public bookmarks
Use diigo to collect the bookmarks for your project.
Create your own diggo account.
as you find good sites, use diigo to bookmark them
as you save them to diigo tag them with a keyword related to your project
you can also highlight the important parts
add sticky notes to remind yourself why you though it was a good site.