Given an Android app that does NOT require any of the features that need to be declared in the
<uses-feature>
element of the manifest, is it best to omit this element entirely or include it with no attributes? Will either option have any different effects on your apps visibility/availability in the market?
From 's docs
Declaring a element is informational only, meaning that the Android system itself does not check for matching feature support on the device before installing an application. However, note that other services (such as Android Market) or applications may check your application's declarations as part of handling or interacting with your application. For this reason, it's very important that you declare all of the features (from the list below) that your application uses.
If you are not using any feature that needs to have a <uses-feature> in the manifest, just remove the whole tag.