Google confirms: Site speed is a (small) factor
Back in November I wrote that Google was likely using site load speed as a performance factor.
They just confirmed that with their blog post Using Site speed in web search ranking.
Note: They said it’s only a factor in about 1% of searches. They also said they just launched this factor a few weeks back – I’m not sure I buy that.
Regardless, get your site running faster. It’s now an official ranking factor.
And, of course, there are all of the secondary effects like better indexation of your site, more customers, not looking like an idiot, etc..