Yeah, it'll be pretty cool. Here's the MRTG config to make use of it.
You want to run this from a cron job that calls it every hour or so:
WorkDir: /export/home/httpd/mrtg
Options[_]: bits,growright
Target[citadel.example.com_accounts]: `( echo mrtg accounts ; echo
quit ) | nc citadel.example.com
504 | head -6 | tail -4`
MaxBytes[citadel.example.com_accounts]: 100
Title[citadel.example.com_accounts]: Number of accounts
YLegend[citadel.example.com_accounts]: accounts
Legend1[citadel.example.com_accounts]: Total accounts
Legend2[citadel.example.com_accounts]: Acounts accessed within the last
30 days
PageTop[citadel.example.com_accounts]: Number of accounts
Options[citadel.example.com_accounts]: gauge,growright,integer,nopercent
ShortLegend[citadel.example.com_accounts]: accounts
LegendI[citadel.example.com_accounts]: Total:nbsp;
LegendO[citadel.example.com_accounts]: Active:nbsp;