good, but with some oddities

A very nice way to display photos, without the lost space of title bars.

There are some odd behaviours, though. Such as if the app is not in the foregroud and you click a photo, rather than coming to the front it goes behind all other apps. In general, window ordering is different from every other Mac app.
And the the ‘Hide Photostickies’ menu item shows cmd-H as a shortcut, but it doesn’t work. But at least selecting the menu item does work.

sweet reason about PhotoStickies, v5.6.6