If apple bans the app, you can still use it and even redownload it if you have before. Generally they just remove it from the app store, but even on phones that don't have the app, you can just log in with someone's account who has downloaded it and it will be under their 'purchased'. That being said, just do a little research about jailbreaking because it's worth it. It took me a few days to get myself fully familiarized with it but I ended up having so much control over my phone that I just couldn't go back.

I have a cat that's getting old and is getting more and more picky with her food. Could you post up a link to that blog post?