For those that are unaware - if you've previously published your thesis at UWSpace (or are about to), don't worry about anyone ever finding it - the University of Waterloo has ensured that no thesis (or even abstract) stored at UWSpace will ever be indexed by competent search engines.
Let me cite their current robots.txt:
User-agent: *
# Disallow: /browse-author
# Disallow: /items-by-author
# Disallow: /browse-date
# Disallow: /browse-subject
Disallow: /'Nuff said!
References:
http://uwspace.uwaterloo.ca/robots.txthttp://dspace.mit.edu/robots.txthttp://ieeexplore.ieee.org/robots.txt