I am getting ready to perform a migration of SharePoint 2007 to 2010, and during the migration horus, i will want to prevent anyone form adding content anywhere, but yet I would like for people to read the content. Is there a way to make the sharepoint 2007 site read only?
Try:
stsadm -o setsitelock -url http://server_name -lock noaccess
That will help you set the site collection to read-only