How many of the old reference sites are still around?

I was going through my bookmark files(maintained since 6-7 years ago)
and found that most of the sites that I used to frequent during my
student life have either disappeared completely or my bookmarked urls
are missing and the page have moved on to a new location.
e.g. optimagic.com, tclforeda.net, rassp
There are around 175 broken links in my bookmark files mostly links to
tutorials,tools and language related pages.

I wanted to know
1> How many of the reference sites of the 90's are still around. If any
have moved where are they now?
2> Of the lost sites what sites do you miss today?

--Ajay

junk.dontsend@gmail.com