There are also transcripts of BMD Certificates. If you have any certificates for Cornish born people, even if the event occurred outside Cornwall you can add the details to the site. There is a link to the form to use. These are an invaluable resource to researchers.
One of the things that kept me occupied for a while was transcribing Zennor and Towednack 'late' Bishops Transcripts that I had found in the FamilySearch Catalog. Towednack Baptisms 1813-1858 and Burials 1813-1865 are now available on the OPC site filling the gap between the end of the Hoblyn Transcript (1812) and the available baptism and burial registers that had been previously transcribed. (i.e. Baptisms from 1859 and Burials from 1865)
As so many of our researchers have family centred around the Towednack area, it is really useful to at last have ready access to these key records.