Do you think technologies should play a central or a peripheral role in second language teaching and learning? Why?

In my opinion technologies play a very important role in second language teaching because we are living in a world in which we are always in touch with technologies. Like we know, we can use many resources to improve not only our skills; but also, our classes and the knowledge of our students. Right now, our students use many social networks just for spend time with their friends but we, as teachers, can use them to teach them in a better way. For example you can upload some videos, pictures, links, vodcasts to help your student or to add information that they already learned in class.  

Using technologies can add something new and interesting in your classes, and catch the attention of your student. Also, you have a lot of tools using internet but you can't forget to check before all the information that you are going to use in your classes.
I believe that technologies take a very important role in this process but they don't take the central role in second language teaching. For me they are good tools in this process.