I would like to be able to solicit feedback (comments, suggestions, etc) from end users within my mobile business applications. I would expect the feedback to range from "I really love/hate this" to "The whatchmacallit is broken" to "can you please add the following feature(s)?". Does anyone have any real world examples or design patterns that they feel work well for this?
Assuming you are discussing feedback about the quality of your application (and you were vague, so this is in doubt), then you need to have hierarchal feedback. That means that a user should be able to give two-click feedback (Thumbs up/down, Submit), three-click feedback (THumbs up, Select stock response from list, Submit), and written feedback (Thumbs up, Select response, add comments, submit). They need to be able to be done at any step and still have given you a useful response that you can use. If you force them to provide complete feedback with a written response every time you will find you get very little feedback at all. If you prevent them from providing a written response when they have a complex issue you've also inconvenienced them and reduced the quality of your responses.
Also valuable is opt-in automated metrics. What features of the application did they use the most? How often do they open the app? What task is most likely to cause them to leave the app? This type of automated feedback can be very valuable, but make sure it is opt-in to avoid privacy concerns.