I got me a grafana.net instance, but how do I push metrics to my account?

Question

I have setup a free account at grafana.com, but cant seem to add metrics to my dashboard:

On my server I have installed the latest CollectD(5.8.1), I have setup the write_graphite plugin like so:

<Plugin "write_graphite">
 <Carbon>
   Host "MyUserName.grafana.net"
   Port "2003"
   Prefix "collectd."
   EscapeCharacter "_"
   SeparateInstances true
   StoreRates true
   AlwaysAppendDS false
 </Carbon>
</Plugin>

But, when I try to setup a dashboard, I see no CollectD metrics :/

Am I missing a step here?