Referring to my previous post on this subject I have since noticed that the ping.fm bot is offline a lot of the time, so difficult to tweet via Gtalk. Another thing I’ve tried as an alternative is to post via email using ping.fm – this works quite well from Gmail (if you use iGoogle).
A further alternative is to tweet directly from Accessible Twitter, an excellent service as the page is easy to read on the Kindles screen. It is a site that definately does what it says on the packet and opens very quickly on Kindle.
See also – Kindle Impressions, A slight Kindle Update