Yes, it is really fast. You can use a PS action to resize to 100px and 250kb and that will make a really nice high rez version. If you don't want a high rez version, than your typical 550px and 99kb works just fine. Send those to a folder on its own, and just ctrl A all the files in the folder to upload them, then I might move them around a little, might add a text box here and there and then choose the music and let it do its thing

I actually use http://www.nsonic-net.de/index.php?option=com_content&task=view&id=336&Itemid=0 Which you can change the language to english when you download. It is the easiest resizer I have found. Any resizer works including PS.

I use all the photos from a session in a video, but, I cull heavily down to 30 images or less. There is no reason to have a bunch of photos that are just minor variations of the same thing