I'm developing a site that uses JavaScript, HTML5 and CSS3 heavily. I have no desire to support last generations browsers (IE8 and under for example.) What is the most acceptable way to let the visitor know they are on an old browser?
Redirect to a place letting them know? Should I let them in anyway after I let them know even though a large portion of the site wont work? Should I recommend a browser to use, or list all functional browsers?