“Best clearfix ever?”

Question

I saw this rather different method for clearfix here: http://www.marcwatts.com.au/blog/best-clearfix-ever/

It proposes adding the following CSS code which automates clea

Answer 1

Are there any disadvantages to this method?

One would be that it won't be enough in < IE8, since the 'after' element isn't that well supported. More about that at CSS tricks