Also, think twice before visiting any website. A web browser can be used for many things. Some of those things (like running extensions, or visiting web pages) have the potential to deliver malicious code to a user's machine. It is not Google's responsibility to police the content of the web, or the content of Chrome extensions. Although one could argue that it would be wise for Google to use its vast resources to provide recommendations/warnings on extensions, similarly to what it does for links in Google results that it suspects are delivering malware.