If we could run every aspect of this site for free, we totally would, but with the introduction of 10x10 collages, it became evident that a limited-access approach was needed to even out the significant increase in bandwidth usage. Unfortunately, bandwidth costs money and... blah, blah, you know how it goes. We figured this would be a great opportunity to offer something in exchange for your donations.
To access the 10x10 option and future premium features, include your Last.fm username in the purpose field while making a PayPal donation of $5 or more. All donations go towards improving or flat out sustaining the site. You can, of course, make a smaller donation out of generosity too.