Android Market update adds support for devices with unofficial market app
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Rejoice, Kindle Fire owners (and the rest of you who have an Android tablet with no official Market application) - Google has rolled out an update to the Android Market enabling support for devices with the unofficial Market app. So now when you install the Market on such a device, you can see it from the Amazon Market website.
Ultimately, this means that your Kindle Fire, Nook Tablet or Coby tablet will now easily accept official Market apps.
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There’s one slight downside, though - the Market also seems to recognize apps previously installed from other, non-Market sources. It then tries to update them, but since they’re not properly signed it can’t. Overall, this seems like a step in the right direction, but there’s still path for growth when it comes to Android handling multiple app stores.
source: Liliputing
Things that are NOT allowed: