From: Ed Pentz <[log in to unmask]>
Date: Thu, 18 Feb 2016 03:53:35 -0600

Hi

There are straightforward technical solutions to this issue but better
'community norms' are necessary. The Crossref text and data mining
information discusses using HTTP headers for agreed rate limiting -
number 3 on this page:  http://tdmsupport.crossref.org/researchers/ -
this isn't widely used yet but if it were it would help.

Regards,

Ed