We've written many times about the benefits of pointing your router to OpenDNS instead of your ISP's ad-shoving re-direct service. OpenDNS now offers a $US10-per-year Deluxe version that offers whitelist-only surfing, customised block pages, and one year of surfing stats.
We dig the free version of OpenDNS because it speeds up surfing, filters naughty content for kids and protects against notable malware. If you're a fan who wants a little more leeway than the free version provides—more whitelist/blacklist slots, a year's worth of surfing and net use logs, a password-protected way around your own "block page," and more—then Deluxe is probably worth the Super Value Meal with Shake cost of $US9.95/year.
Even if you're not an OpenDNS super-user, the Deluxe package removes all advertising from your page-not-found results. There's also an Enterprise edition, but we're guessing you're not the one who makes the $US2000/year call on that kind of package.