Few days ago Google announced new project. This time, DNS is thing they wish to change.
What they decided to offer is public DNS service for anybody willing to re-configure his IP settings. Since having DNS at 8.8.8.8 and 8.8.4.4 is quite easy to remember, there is no problem to change it at all computers that you use.
What Google gives here is promise of speed and I must say that they deliver. Their DNS is quite speedy and stable. While I cannot say that I would miss it much if they decide to pull a plug, I must say that I had no issues with it. And little bit of speed is not a bad thing.
There has to be a catch! :) Records caching also speeds up name resolution and all ISP providers are doing it. I do not see a point in using google DNS. :) But thats my 2 cents.