by NZcaver » Jun 1, 2010 7:24 pm
I have all three. In my opinion, there's no contest. Picasa is head and shoulders above the rest. Photobucket has poor layout, and is cluttered with ridiculous amounts of advertising. Flickr is better, but only lets you "display" 200 photos at a time unless you pay for a pro account. Picasa is free, with a gig of free storage per account, no advertising, public and private album options, direct linking to images, and easy access to Blogger, YouTube, Facebook, etc.
I suggest signing up for a free account with each of them, and giving them all a test drive. Upload some photos, share the links with a few friends, and ask what they think. Have fun!