The submission form on the website used to use exactly the same code as is in the Apronyms application, but it has recently been rewritten in PHP for various uninteresting reasons. Apronyms submitted to the site using the app do not go through the validation again on the server, so that provides an explanation for an apronym which the app accepts being rejected by the submission form on the site.
I thought the new version of the submission form was using the exact same algorithm as the one in the app, but it seems like something's gone wrong. I'll look into it after I've had some sleep.
Meanwhile, who needs PowerPoint now there's Keynote? (http://apple.com/keynote/)
KEYNOTE: Kept Easy... You've No Overhead To Exhibit
With Keynote, you don't need an old-fashioned overhead projector and slides, so there is less overhead in setting up a presentation.