Linux Counter asks registered people to update information-dupe, see below

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Author: JT Smith

If you registered yourself or your machine on the Linix Counter
(http://counter.li.org), you need to check that your data is
up to date. We have been quietly cleaning up entries, so there are
not several entries with variant spellings and various abbreviations
for cities and towns, and sending test emails to the oldest
entries. We’ve determined that ~99,000 — more than half of the 180,000
registered- aren’t deliverable and these will be removed from
the Counter on the first of November.

Over the 7 years the Linux Counter has been online, the forms
have evolved to include more information, and many of those who
registered have moved to new ISPs. If you registered more than
2 years ago, please login and check your data. Pass the word
along! And volunteer to help!

We want to get this done before the Great Migration that should
be starting RealSoonNow(tm) 😉

http://counter.li.org/news/deletion.php
http://counter.li.org/organization/drop-people.php