Maybe a little dumb, but I'm getting the kids a couple iPod Touch's soon and wanted to know if I need to buy the same app twice or can I just buy it once and put on both iPods?
You can sync to the same account through different computers, my daughter shares my account here in New Zealand and she lives in Australia. You just need to log into the account and then authorize the computer for that account in the drop down Store menu. You can have up to 5 computers authorized to an account.