you can re-download it for free on the shop channel (for dsi and wii)
Yes, deleting games will free up the space (which the DSi divides into 'blocks') so you've got room for other things. The deleted games can freely be redownloaded from the DSi store.
If you got the web browser from the dsi shop, then yes. Just go back to the dsi shop and get the web browser again. Simple.
No, you cannot get a deleted game file back.
Deleted games cannot be retrieved like that, to all intents it is lost forever.
Once you deleted your game save, it cannot be recovered.
You cant
no
You don't get refunds for deleted downloads - you bought the product for a fee, not hired it with a deposit. However you may still re-download the game.
There is no way you can get your data back if its deleted Sorry =(
No
you get it at game stop there's one in Lynn if you have a ds you can trade it in for a dsi and get 70$ back
you can't get it back.