It was a quick decision for the team to decide that this module should come with the essential package and not require an additional purchase.
Ryan and I used this module as one of our first proof of concepts to form our linkage strategies between our administration tools (affectionately referred to as wwCpanel or WebWiz@rd 3.0) and the front end of a site.
Incidentally, Ryan is actually working on a new EXTREMELY powerful context based help system that we've used the Meta Tag module for it's testing grounds. Not bad for an HTML 3 element that was defined before many of you even witnessed your first website.
My favourite thing about this module:
Simplicity. It does one or two things. Type your keywords here. Hit Save. Done.