There are many interesting pages, but as teachers, we must not forget to make an exhaustive analysis of the material we are going to offer students.
In this case I show you, another interesting page, where we can find available resources organized according to different levels and subjects.
The link:
In short, we need to innovate constantly and every day we have more and more pages and resources for English but of course we have to analyze all the information properly and decide whether it is useful or not at class.
ticsinenglish 
This page is really interesting, As you say, the Internet provides Students and Teachers a wide range of tools and resources to use at English class.
There is a page I very much like, I often use it when I have to do the different activities for English subjects. Here is the link :
http://learnenglishkids.britishcouncil.org/en/explore
This page contains all sort of activities to develop the different skills: reading, writing, speaking and listening.
Through topics pupils learn values and concepts. They can investigate, make experiments and sing and play games. It is an interactive page where children learn and enjoying themselves.
I also believe that teachers play an important role in our students’ correct use of the Internet. Many times they don’t really know the type of information they want to access, they don’t have enough knowledge to surf the Net in an effective way, they can’t distinguish between relevant information and non-reliable information and they hardly read the websites content. They just watch what catches their attention, like images and videos, and when it comes to do an activity for school, they believe that just copying the content of the page they have visited is enough. It is quite probable that this inappropriate use of ICTs could be solved at school.
Montse Giraldo
I agree with you, eslteachermgiraldo. Children can get lost easily on the internet, and it is our job to help them how to search the information, and how to use it in a correct way, Parents and teachers must be careful with internet, and show children the importance of make a synthesis of everything they find, not just a worthless copy-paste.
Sara