There are numerous examples you can scroll through (eg http://www.symbaloo.com/mix/teaching5).
You can also get students involved in the creation of thematic sites, which they can share with their peers. It is a great tool in allowing students to appreciate the concept surrounding research and collaborative learning.
As a teacher, I have found it enormously useful in directing students towards a specific tile if some are struggling with a particular feature (e.g. spelling, note taking....)