Tombstoning for a "read-only" app

Question

I'm developing a Mango app that connects to a local database, reads data from it and never modifies them nor inserts. I've heardt that bad tombstoning handling can make the app to be refused to the marketplace.

What are the practices to follow for avoiding my app to be refused?

Answer 1

Bad tombstoning support shouldn't cause a marketplace certification fail.
The only related thing I can think of would be if a lack tombstoning handling caused a crash or the app to be left in an unusable state. (Possibly a blank screen with no refresh button.)

Handling for tombstoning means making sure that if the user leaves your app and the returns to it, via the back stack, the app is in the same state (as far as is appropriate to the app) when they return as it was when they left.

There is a helper library which you may find useful: http://tombstonehelper.codeplex.com/ (I wrote it)