Can I only post one photo at a time?

The simple answer is pretty much yes, one photo post at a time. However, it really sort of depends on where you are posting it from: Mobile or web. If you are using the web upload interface, you can just post one item at a time. If you are posting using your mobile upload address, you could theoretically attach a few photos to one MMS or email that goes to zannel, depending on the device you are sending from. The disadvantage to doing this is that any text description that you add to the upload will be duplicated for all the images you post with that one email. Sometimes that's a good thing, sometimes not.

Would multiple photo posts be a feature you would find useful, and if so how would you like to use it??

Thanks for the feedback!