My ISP's DNS servers seem to suck, so I looked at OpenDNS, after seeing it mentioned a bazillion times on
Wired's compiler blog. I have a FreeBSD box running a local caching nameserver anyway, so I told it to use the OpenDNS servers as forwarders instead of my ISP's (Rogers). Instant faster lookups, hurray! I also played around with the DNS blocking things (having a wilful stepdaughter can be trying, let's just say that), and successfully blocked my wife from facebook. So, I figured it can't hurt too much, and I'm letting it block most categories of adult websites now.
So far, so good. We'll see how it goes long-term.