Welcome to Performance C5!
This original site was built on an older version of concrete5 and was suffering from lack of maintenance. I hope to get the archived site up on a subdomain shortly (today is October 4, 2013).
Since many people find this site useful, I am updating to the latest version and rebuilding with new blocks and code. This should be a fun journey as time permits. Exploring the marketplace was originally limited, with less than 100 add ons available. As of October 4, 2013 the number is in the 1500 range and the PRB (peer review board, where add ons are fully tested prior to release) is stocked with new things all the time. It really is amazing all the cool blocks that developers are creating.
More to come...
Everything about concrete5 is completely customizable through the CMS. This is a separate area from the main content on the homepage. You can drag and drop blocks like this around your layout.