Does anyone know how to drag and drop photos from Picasa for Mac into a Keynote slide? I know you can do this from iPhoto, but in general I like Picasa much better.
I use rightclick show-in-finder all the time, remember to SAVE first (eg clicking the disk icon) or you will be using the unedited file!
Picasa definitely should add the function to "export" the photo you hold when you drag it outside the window, thus letting you have a copy of the edited file in hand, ready to drop in any app
If it doesn't just work out of the box, it's probably just because of the code in Picasa. That app is very cross-platform, so it's likely they didn't take the time to add the Mac-specific code that would allow it to interact with your system in such a way.
Anyhow, I'm sure drag-and-drop works to the Finder (and from the Finder for Keynote), so really, that's what your Desktop is for! (Edit: evidently not)
the simplest way is to place the photos you want to use in keynote, on your desktop, from picasa, and THEN simply drag them from the DT into the open keynote window.