As a user, I'd certainly prefer for apps that I download to use the built in system functionality (like C2DM). One of the advantages of C2DM is a standard listener that used by all apps, rather than have multiple listeners (each potentially causing battery life impact). If the C2DM API is hard to use, it makes a hell of a lot more sense to write a helper wrapper around it, rather than add another listener.
No idea why you're getting downvoted. No application that uses their own push technology is as nice to my battery as C2DM is. Facebook and Twitter can't even get push notifications right, though Google refuses to put Google Voice through the push/sync that Gmail/Calendar/Contacts have. It makes no sense to me. It's there, it's easy to use, it's really battery friendly...
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As a user, I'd certainly prefer for apps that I download to use the built in system functionality (like C2DM). One of the advantages of C2DM is a standard listener that used by all apps, rather than have multiple listeners (each potentially causing battery life impact). If the C2DM API is hard to use, it makes a hell of a lot more sense to write a helper wrapper around it, rather than add another listener.
No idea why you're getting downvoted. No application that uses their own push technology is as nice to my battery as C2DM is. Facebook and Twitter can't even get push notifications right, though Google refuses to put Google Voice through the push/sync that Gmail/Calendar/Contacts have. It makes no sense to me. It's there, it's easy to use, it's really battery friendly...