Could android:targetSdkVersion=8 be causing problems?

My Android application uses minSdkVersion=3 and targetSdkVersion=8. I used 8 because that is the highest level of API the application was tested on; however, it was written for level 3 and does not use any features beyond that level (except one for level 4 using ref开发者_StackOverflow中文版lection). Could using targetSdkVersion=8 be causing:

1. the Android Market to filter the application for some devices? My intention is for the application to be available for ALL devices >= level 3 with NO filtering.

2. problems in the application since targetSdkVersion=8 will, according to google: "disable compatibility settings that are not required for the target version (which may otherwise be turned on in order to maintain forward-compatibility) or enable newer features that are not available to older applications".

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No. targetSdkVersion:8 just tells the system that you support SDK 8 features, like installing to SD card. minSdkVersion is what will filter the app and hide it for users with a lower SDK.