For ergonomic or design modifications requests, as I can’t take all requests in account (I receive ~4 requests per day), I count them. If I receive at least 5 requests on the same subject, I’ll take it into account.
For features requests, it can different, one request can be enough if it is interesting 🙂
Keep in mind that each new feature require a lot things :
– time to be added to the application (coding & testing)
– a little bit of phone memory (each new modification have to be handled)
– a little bit of phone battery (with new features require CPU to be handled)
– and add complexity to the widget configuration and/or interface
EDIT 05/09/2010 : here is the new way to suggest features and vote for them !