As part of its efforts to make the Web faster, Google introduced a public DNS resolver called Google Public DNS. In Google's mind, helping make the Web faster and more reliable will encourage people to use it more often and in turn it will be able to sell more ads, says Pocket-lint.
The initiative isn't completely self-serving. As people use Google Public DNS, the company plans to share what it learns with the broader Web community. According to Erictric, one benefit of using the public DNS resolver could be increased security. Using Google's DNS server could help combat DNS spoofs, cache poisioning and denial-of-service attacks.