It'd be nice if the LPM provided a cacti-like graph of the values of /proc/io_status for a linode. That would make it easier for users to troubleshoot their performance issues.

I already set it up myself, but since not everyone is going to have an alternate linux box handy nor want to install cacti on their host, an external source would be nice.

There are munin scripts for graphing io tokens, you can find the discussion about that here:

http://www.linode.com/forums/viewtopic.php?t=1144