Blogs are a very interested website that I can use to bound a good relation with my students that lead to a better teaching and learning in and outside the class. For example:I can give my students some homework s or reading and ask for their opinion, or they can post their own material that they think it has relation to our topic and we (the rest of the class and me ) can add our comments.
I can also post an extra reading that are related to the previous topic we had in class and ask them to read ,reflect and add their own comments
on wiki , I can give my students some interested learning games or online tests.
For delicious I can ask them to subscribe in some English teaching website to help them improving their English . It will be a good use of online materials like videos or online teaching websites .
I can even chose one class a week that we take it in the lap and start working on all of these three websites .
it will be a great add to my teaching style that will keep students ore interested ,and keep me more aware of my students progress .