REPLY: Of course I wasn't having anyone on.  We use it (Thorn) all the time.  You can use Thorn or Eth to make our English "th" sound.  Thorn is more commonly found as it is still used in Icelandic.  On a Nokia it is seven presses on the "wxy9" key. Eth is nine presses on the "def3" key. I am snobby and hate using "b4" (before) and "m8" (mate).  But I have no problem with using Thorn (e.g. My faÞer is coming as well.) or Eth (e.g. ðey will be here soon).