Ask Slashdot: How to best block web content

willoughby writes: Many routers today have the capability to block web content. And you all know about browser addons like noscript & adblock. But where is the "proper" place for such content blocking? Is it best to have the router only route packets & do the content blocking on each machine? If using the content blocking feature in the router, will performance degrade if the list of blocked content grows large? Where is the best place to filter/block web content?