I looked up the word ‘feedback’ in my thesaurus and found the words signal and loop, both of which I liked. The other obvious word to use is tab, but this gave me some horribly dull names e.g. feedbacktab, tabfeeder, feedsignal, loopytab.
The chapter Name Hook from Getting Real has some great advice on this area:
A big mistake a lot of people make is thinking their app’s name needs to be ultradescriptive. Don’t worry about picking a name that vividly describes your tool’s purpose; That usually just leads to a generic, forgettable name. Basecamp is a better name than something like Project Management Center or ProjectExpress. Writeboard is better than CollaborEdit.
Also, don’t focus group or committee-ize the naming process too much. Pick a name that’s short, catchy, and memorable and then run with it.
And don’t sweat it if you can’t get the exact domain name you want. You can always be creative and get close with a couple of extra letters (e.g. backpackit.com or campfirenow.com).
Taking this advice onboard I have decided to ditch all of the ultra descriptive names and chose barometer. A dictionary definition:

A barometer doesn’t promise, nor deliver, 100% accuracy, but it gives you an impression or idea about what is going on. This seemed to nicely mimic the feedback you typically get from users.
A google search produced lots of results, but importantly told me no other software bears this name. barometer.com was obviously taken so I went for getbarometer.com. Name done!

