Sharpcast has launched their photo sharing and syncing service. The biggest benefit that I see is the ability to automatically sync your photo library among multiple PCs (as well as having a backup of your photos on the Sharpcast servers). Sharpcast also provides the ability to share photos with others, comment, and chat, but to me that stuff is secondary — I’d rather share my photos on my blog or Flickr. The biggest missing piece right now appears to be support for raw format — currently they only support jpeg, but raw support is supposedly coming soon.