You like TDD? you'll love Infinitest.
Each time you change the code Infinitest runs the relevant tests for you!!
Ask your questions on Stack Overflow using "Infinitest" tag.
Discuss Infinitest on the infinitest-users google group
Follow Infinitest on Twitter
Report issues and fork Infinitest on Github.
Talk about implementation on the infinitest-dev google group
Yourkit is kindly supporting Infinitest open source project with its full-featured Java Profiler