keywordblocks.comは安全ですか？

Visiting the website redirects to media.net, a "Yahoo!/Bing Network Contextual Ads" distributor or something. Viewing the site's "http://www.media.net/adchoices" by clicking on Adchoices at the bottom of the page, it claims to do its purpose "...with the help of cookies which collect useful non-personally identifiable data...". and presumably the user can Opt-Out either by visiting that page or by going to "http://www.networkadvertising.org/managing/opt_out.asp" which can be accessed by clicking the link on the page mentioned beforehand. Using google's chrome's View Source and pastebin, I've made a file showing the source info here: "http://pastebin.com/TTc6Aw0a"