ScoopIt
Create a newspaper style page, for example see this on Equations.
Jog Educ
Create a Jog by registering with Jog Educ. See this example on Word Cloud generators.
Sqworl
Another application to achieve this is Sqworl. This site requires registration.

Each link is presented as a thumbnail and it is possible to give brief notes for each as well.
For example: see this collection of formulae for Shape, Space and Measure required for the GCSE Mathematics syllabus my students study.
Other applications to provide lists of links include Bundlr and the outstanding and very popular LiveBinders. The Free Tools Challenge (#15) offers clear instructions on how to use LiveBinders.
