Is there a way to delete all entries? Starting on a second site which is an almost like for like copy of the first, except it has different content. I cant use locales to manage it because there may be the possibility of multiple languages on the second site.

I have dozens of field &amp; entry types I want to transfer over to the second site. Is there an automated way of deleting all the content?
You could also delete all rows in your craft_elements table, which have type set to Entry (or whatever ElementType you want to delete).