Flickr, Picassa

[Amira]

I haven't really used Picasa much, but I have used Flickr a fair amount. Unless you upgrade to a pro account (which is only about $25/year or so), you are limited as to the number of images you can upload. With a pro account, you would be fine uploading a lot of images, but if that is your only source to maintain a lot of images, it's going to be labor intensive to download the ones you want to put back on your computer. I haven't done it in awhile, but I think you'd have to download them individually. If they have a download option for multiple images, I haven't ever used it (or found it).

What is he using now? Is he trying to share images along the way? The cheapest and easiest way would be to just buy more cards for the camera and wait until he is home to download them. When I'm on a big trip, I've been known to take 40G of cards with me. And now that cards are larger and larger, it's not expensive to get a 4G card, which will hold a lot of jpegs. He could also get a small portable external drive or even a few flash drives (very portable) that could be attached to a laptop and/or desktop, if he has access to one to download cards.

ETA: and, as OakLeaf also pointed out below, uploading full resolution images to Flickr or another site is a PITA, timewise, although I don't know how big the files are from whatever camera he has along. I guess I need to go buy new, bigger cards myself.