I made an attempt at it once for fun (couple of months ago, maybe a little more) but I didn't like the results much. That said, it was a heck of a lot more manoeuverable than a DSLR, but that as a pro didn't really outweigh the cons.

If it works for you though, then why not? I'd suggest finding a better camera but hey, if it works, then it works. The first camera I used for stop-motion was this thing the size of a memory stick that could only store 20 photos at a time, all of which were terrible quality.

"Nothing goes down 'less I'm involved. No nuggets. No onion rings. No nothin'. A cheeseburger gets sold in the park, I want in! You got fat while we starved on the streets...now it's my turn!" -Harley Morenstein

I'm curious how well this sort of thing can work. It seems to me like smartphone cameras are starting to catch up with webcams, but you'd need manual controls and some focus ability to really get nice, controllable results.

I've made just about four films using my iPod(5th gen), some better than others. I downloaded an app called Stop Motion Studio for pretty cheap, and with it I was able to manually control the exposure, white balance, as well as focus. So, if you've got nothing else to work with, an iPod camera could be doable if your willing to spend a bit of money.

Here are a few examples of films I've shot with my iPod:

https://www.youtube.com/watch?v=JNqDvLCGruI

https://www.youtube.com/watch?v=8v_zqiOHXS4

I use my Galaxy Note 4 and Camera application for animation, but only because I don't have the computer power to upgrade to anything better. Hopefully I'll be able to upgrade to something better within the next year (probably a DSLR) so I can really immerse myself in the hobby.