Yahoo recently launched their Yahoo Photos site with free unlimited photo storage - I couldn't wait to try it. Unfortunately, the upload wizard is not Mac compatible. You can still upload photos via your web browser, but you must select each photo individually with a maximum of 10 photos per transfer -- pretty much rendering it useless if you have a lot of photos to transfer.
Since I am playing around with Windows Vista Build 5536 (Pre-RC 1), I decided to give Yahoo Photos a try and see how well it help up.
Uploading photos is very easy with the Upload Wizard, just drag and drop a bunch of files and off it goes. The UI does not properly handle "spaces" in the file name while uploading, replacing it with an unfriendly %20. Luckily, the file name is stored properly once the upload is complete. The performance is sub-par - taking over 2 hours to upload 106 files (234 MB) (my home network is capable of handling 1.5GBper hour). I am also having problems with failed uploads (reason "unknown".) Out of the 106 files, over 30 of them failed to upload the first time around, the upload wizard automatically retried the failed files at the end, but still over 10 files failed to upload, and no further retries were performed.
Given this initial poor experience, I quickly abandoned any further tests. As it stands, while the unlimited storage is awesome, Yahoo Photos cannot handle my current digital photos needs for an online photo service.