In ALIWEB the global list is maintained by a form for subscription,
and email for deletion (currently by hand). But, by having a
"standard" location for the per-site info any robot can go around
looking for that.
If you want an index of resources related to a particular topic you
can either use ALIWEB simple or form-based search to do it for you,
copy the data to your machine and do it locally, or even get the
list of hosts and go and get the information yourself in a standard
format.
-- Martijn
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