[atlas] network coverage and probe API

On Tue 22 Apr 2014 10:16:55 BST, Bajpai, Vaibhav wrote:
> Who are registered users?
> - who have registered a RIPE account via? https://access.ripe.net
> - who registered to receive a probe irrespective of whether it’s online?

A registered user, in the context of RIPE Atlas is a user who has 
registered a RIPE account via https://access.ripe.net/ AND has visited 
the Atlas site at lease once while they're logged in.

> However, the geographical distribution plot uses the term, “connected probes”,
> but the stacked plot below uses the term “active probes”.
> What is the difference between connected and active probes?

Yeah that was just poor choice of names at the time that that page was 
created.  I've since brought them in line so now they both say 
"connected probes".  If you do a refresh on the coverage page you'll 
see :-)