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Not a bad thing if this is going to reduce the number of time Twitter crashes :-).

Not so good for the current clients of Crashytics though. Are the other tools/services that provide good crash analytics?

Have you checked out Crittercism? http://www.crittercism.com :)

crittercism has prevented us from losing about $150K worth of users.

You should definitely check out Bugsense (http://www.bugsense.com)