Days after speaking with astronauts on the International Space
Station, William Shatner is back - and this time he's slumming
it on Reddit.  The 81-year-old Star Trek actor has been a
regular user of the site since January, but has now made
headlines in the tech press after taking issue with Reddit's
considerable dark side.  In a conversation posted on the
discussion site, Shatner said he was dismayed at the extent to
which racism, sexism and other offensive content is allowed to
thrive there.  Reddit's users take pride in its willingness to
protect the 'free speech' and distasteful views of some of its
users, even if it disagrees with them. Reddit's terms of use ban
only a small range of posts, including those which contain
sexualised images of children and those which are outright
illegal.  But for Shatner - and many other people who use Reddit
- the site doesn't go far enough in finding a balance between
open conversation and what for some is a tactic encouragement of
boorish hate speech.  In a thread that