Recommend me good blog for English corner

We’ve lost our English corner room, and so I’m going to set up a blog for students to publish their work. I’ve used blogger.com, and it’s fine, but wonder if there may be better ones around.

The criteria will be.

  1. Easy enough for 12-18 year olds to use and publish stuff on without too much help from me - some of these guys are not computer geniuses.
  2. Free to use.
  3. If audio and/or video can be uploaded, that would be great.

Any info would be appreciated.