lots of people use NewRelic etc..., but it's a bit pricey for tiny
sites.
In those situation I still use production log analyzer and then the
dev version of the NewRelic tool, which is quite good. When I was at
Ponoko I started dumping the production log analyzer data straight
into a db then showing it over time etc.. so a bare bones NewRelic/
FiveRuns/ScoutApp. Much more fun having the raw data IMO
on a side note, I use the Hoptoad notifier plugin for exceptions but
point it at my Redmine server which pretends to be the hoptoad
server. It auto logs the exceptions against the right project etc...
I keep meaning to do the same type of thing with the NewRelic plugin,
point it at my own server...
nahum.