1. Sorry I thought that read "can download your photos". But still, if your pictures are visible on the web then they CAN be downloaded. You might consider putting a watermark on each picture, or, uploading a small low resolution copy of your picture.
You're correct, morefire, right-click doesn't work in a Flash Gallery, but there are other ways to get them if someone really wants them. It's unlikely, if they're family pics etc. that people will bother with them anyway, but just be aware, if they are on the web, they can be got at.
As an example, morefire, I was able to get fitshase's full-sized pictures (from anchor's post) onto my computer quite easily and I'm no expert. If I was someone unscrupulous I would be able to use fitshase's pictures for something else and pass them off as my own.