From May 2002 to Dec 2003 I sent out the monthly Information Flow newsletter. There were over 2500 subscribers at the end when I fell off the practice. I still run into readers that bring it up ... this was the Newsletter's plug:
The Information Flow email newsletter covers a wide range of topics related to how enterprises, publishers, researchers, and analysts can use technology to make sense of the deluge of available information. From knowledge management infrastructure to data analysis tools, from categorization to visualization, from algorithm swamps to document galaxies. Explanations, stories, opinions, links - in general, context to help you quickly gain a deeper understanding of this huge, but at the moment, confusing and confused, space.