Plone texts have seen increased sales in recent months. The Plonemetrics Blog gathered the data from Amazon for the number of Plone books that were sold so far this year.
What stands out is that there is a variety of authors near the top of the list and that no single source is significantly outpacing the others. As Plone is an open source application, it seems likely that having more voices would lead to a more robust community.
It is our hope that as interest grows, we will see an increase in enthusiastic and competent developers. As development grows, the need for strong system administrators will be imperative to support the growing number of deployments. Too help with this need, Six Feet Up will continue to host affordable, informative workshops like the Plone Deployment Workshop in Indianapolis in November. We look forward to seeing you all there!