Myouterspace.com is, in the captain's own words, '... a Sci Fi Social Network for those with a passion for the arts.'
But that is exactly why it won't catch on. The reason why Facebook is so popular is because -everyone- can use it.
Originally not many people could use facebook -- it was only for people in college. There's no reason why Shatner's site couldn't include more people later, but honestly, (and as other people have already said) I don't think they needs to include everyone to be successful.
Apparently pictures of space are cool again....
What? Pictures of space are always cool!
...Trying to represent files on a computer in anything more than two dimensions is always going to fail
Always?!?!!! You obviously haven't seen Hackers... or Jurassic Park!
To the systems programmer, users and applications serve only to provide a test load.