How would I use blogs, wikis and delicious with my EFL students

Blogs:
is a type of website or part of a website. Blogs are usually maintained by an individual with regular entries of commentary, descriptions of events, or other material such as graphics or video. "

Blogs can be used to inform students of class requirements, post handouts, notices, and homework assignments, or act as a question and answer board.

Wiki:
is a website that allows the easy creation and editing of any number of interlinked web pages via a web browser using a simplified markup language . Wikis are typically powered by wiki software and are often used to create collaborative wiki websites, to power community websites, for personal note taking, in corporate intranets, and in knowledge management systems." http://en.wikipedia.org/wiki/Wiki "

I can used wiki in teaching my students writing. I may also put the assignments, schedules and the handouts and ask students to go for it. By using wiki I can motivate students to communicate and sharing expereinces.

Delicious:
is a social bookmarking web service for storing, sharing, and discovering web bookmarks.
i can used delicious to ask students to bookmark games and activity that may help them in learning English as a foreign language .