whoops, indeed

Whoops! You're out of space. You are currently using 100% of your 1 GB quota for photos. Upgrade storage

Photos are stored in your Picasa Web Albums account and are included in your 1 GB free quota for photos. Additional storage that you purchase is shared between several Google products and is in addition to your free quota. Learn more

I now have the option of buying, at a certain fee per month, more storage.