This is why so much has been materially invested in OpenStack (http://www.openstack.org/) which powers our Cloud offerings, why we have http://github.com/rackspace, http://rackerlabs.github.com and are internally looking at more and more projects to contribute back to the developer community. This is also why more and more projects lead by Rackspace are really being designed in the open and incubated in the OpenStack project (Marconi, for example: https://wiki.openstack.org/wiki/Marconi, Heat and others).
I've been continually impressed that everyone is behind the idea of truly giving back, getting involved in and supporting open source and the community. Rackspace is a company that already supports its local community (http://www.rackspacefoundation.com/), gives employees time off for community service, etc.
From a strategic standpoint, this is why Fanatical Support for Developers is such a crucial piece to this. We want Rackspace's Open Cloud to be a fantastic experience for developers internally, and externally. We want all want to make Rackspace services the ones that every developer wants to use, and make Rackspace’s Open Source projects the best of breed solutions in their areas.
This vision; and Rackspace's values are why I joined - they may not be where they want to be today, and this vision takes time to achieve, but everyone is actively invested in it.