Is it possible to run a hidden service in tails? I am aware of the GsoC Tails-server, but as it seems the project was dropped? However, is it possible to run a normal hidden service inside tails? Is there any advice/hints on how to achieve this?
thanks.

It should be possible to do so, using the "normal" means (Vidalia or
torrc). You may want to make the HS directory persistent.