I was just playing around with Picasa Web, one of Google's latest offerings. From iPhoto, I just select export, and my pictures get resized and uploaded to my public gallery. Wicked.
They've given me 250MB to play with. I've uploaded Chin's pictures from Marvin and Heather's wedding as an experiment. Check it out.
I can apparently link to other people's galleries (Hint: Chin, Chris, Ruby ... y'all have Google accounts). There are also RSS feeds, which means I don't have to visit your gallery every day to see if you've uploaded more photos (claps hands and jumps up and down repeatedly with gleeful smile on face).