Usage plugin does not seem to report usage.
I have enabled reporting in preferences, then restarted eclipse.
My org.jboss.tools.usage.prefs

#Mon Nov 29 17:01:08 CET 2010
first_visit=1291046435955
eclipse.preferences.version=1
allow_usage_report_preference=true

but this should contain hit_cound and last_visit properties. I'll recheck tomorrow google stats for sure.