Noticed a short while ago that when attempting to attach an image to a post using an iOS device, I would get an error stating that JPEGs were not a recognized file type and that those attachments were not allowed.
Fixed now and if you have had that issue in the past you will now find that JPEGs are allowed as an attachment to a post.
It should be added that only supporting and lifetime supporting members can upload pictures directly to the KappaPerformance servers without using a photo sharing site.