On 30/03/2011 19:17, Marcus Kool wrote: > If your users do not mind, you can block ads and user tracking > sites of which many produce 1x1 gifs. > Most ads and tracking codes are not cacheable and may consume a lot. > This all depends on which sites your users visit of course. Thanks - got that covered to some extent. So far I was looking at these two lists for a simple domain blocking system to catch "adverts and tracking" http://www.mvps.org/winhelp2002/hosts.htm http://hosts-file.net/ Any other suggestions/comments? Additionally we will offer the option to do image recompression and upstream gzip of content (actually probably we will use our own compressing tunnel across the slow link) Anyone know of any already written ecap/icap servers I might want to investigate? Cheers Ed W