Google's Alexa -- Google Trends for Websites
People know Alexa, a site which let you search website traffic and sth. Now Google releases their Trends for Websites. Just like Alexa, Google Trends for websites gives us the keys to more data about actual popularity of websites based on daily unique visitors.
Google推出了他们类似Alexa的Trends for Websites，当然，目前功能还比上Alexa，但是以后谁知道呢？