I bumped into a very useful blog about online resources for the learning and teaching of the English language.
I found particularly interesting this one: http://www.easyenglish.com/
When I teach English to students who are studying for the B1 level exam, they ask for lots and lots of exercises.
Since it’s not always easy to provide them with as much material as they want (for several reasons, teachers will understand what I mean), I am highly interested in these type of webs. Students can have access to the web, they can find a wide range of activities, they can use at the same time an online dictionary, and they know the answers immediately.
Summing up: highly useful and interesting for our students!