Planet13 - 5:12 am on Nov 14, 2011 (gmt 0)
The idea being, to be an authority site, you need to link out to other sites.
There's another way to look at it:
Sites that are good resources GENERALLY have lots of links out to other quality sites. So in the good old days webmasters would just link to that one page with all the other good links on it (instead of linking out to the same 50 links).
I see LOTS of sites / pages that are links resources and haven't been updated since, I don't know, 2002 maybe, with tons of aged inbound links. Maybe before google became ubiquitous, people really thought these "quasi directories" were how people were going to find things on the web far into the future.
Nowadays, people just say, "Just google widgets and you'll find it," and they link to google search page instead.