The following article talks about how sometimes when we search with Bing, Google, Ask, etc.. we can get redirected to a bad website full of scareware. (http://en.wikipedia.org/wiki/Scareware ). Most of these come when you search "hot topics." So be careful what you search for and look for redirects.
http://nakedsecurity.sophos.com/2012/10/05/bing-image-blackhat-seo-poisoning/?utm_source=facebook&utm_medium=status+message&utm_campaign=naked+security
http://nakedsecurity.sophos.com/2012/10/05/bing-image-blackhat-seo-poisoning/?utm_source=facebook&utm_medium=status+message&utm_campaign=naked+security