Do not lose the .keystore file

First a caution:

I was working hard (according my standards in updating my Indian news app. And today was the D day. I tried publishing it. But market site told I should use the same keystore as my previous version. My computer is formatted recently and I have not taken the back up of that keystore file.

Now there is nothing else I can do except for unpublishing it and publishing with a new package name. I will be losing all my downloads.

So please keep your .keystore file and its password very very safely. As someone in stockoverflow suggested, send it to yourself in gmail.

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