You have no idea what is the purpose of a DNS, do you? Choosing Google DNS doesn't mean adding a man in the middle. Your computer needs the DNS data one way or another, there is ALWAYS a DNS server. Whether it's Google or not.
Google DNS doesn't make sites go faster...... It isn't a CDN like CloudFlare.
Sites appear to load faster because Google DNS is really well optimized. If you use a benchmarking tool, chances are it's faster than your ISP's DNS servers.
*yaaaawn* Can you try reading my posts?
I explained to you why a DNS is necessary. I then went on to explain why using Google's DNS is pointless. Not only is it pointless, but it exposes you to a massive privacy risk.
As stated above (I don't know how many times)... I use a DNS to BLOCK ads. Using Google's DNS gives your location data to the world's BIGGEST tracking/data mining company.
End of the day if you think you're smarter than me and I'm clueless, I don't care! I'm just trying to help/advise you.
You're te one who is willfully giving away your location data to a multi billion dollar tracking/advertising company. If you think that's smarter than my approach (which involves blocking that very company and most others from tracking/advertising) then I lose nothing.
If you want a cleaner (and faster due to far less ads/trackers/phishing scams/malware) then use an ad blocking DNS. For example dnsplease.com (and hundreds of others, use that dreaded Google search if you MUST). You'll find that their goal is to:
'...prevent your computer from connecting to selected internet hosts that alone will reduce bandwidth use, block most major parasites, blocks certain pop-up traps, prevents user tracking by way of "web bugs" embedded in spam, block ads, banners, 3rd party Cookies, 3rd party page counters, web bugs, most hijackers and even unwanted Adware/Spyware programs'.
If you want to use the Google DNS then look into what they do with it. In my view you'll find that you're achieving nothing more than what your ISP will achieve. As stated BY MYSELF, benchmark sites will likely show very very VERY minor speed gains with a Google DNS. This is BECAUSE Google's ads and trackers will load faster... Google Analytics (i.e. unauthorised tracking) are a MASSIVE part of most sites today. The only faster option I can think of is COMPLETELY BLOCKING ALL UNAUTHORISED TRACKING!!! This will be faster and you won't get tracked!!!
If you think I'm a fool for blocking a significant proportion of ads/trackers/phishing/malware...etc using a DNS then that's fine. I really don't care about what some kid thinks about my intelligence.
If you think I don't understand DNS' then that's also cool. Just make sure you REALLY understand what you are doing. I'm in no way confident that volunteering to give your location data to Google is of ANY benefit. The minor speed boost (mainly linked to loading Google services a little faster) just ain't worth it for the privacy you are losing.
Just don't do it unless you can think of a REALLY GOOD technical reason. So-far I'm yet to hear one.
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Edit: Since I'm sick of hearing myself and none of the Google fans seem to know how to use their beloved search engine, here's a few links to check out.
Why Google DNS is a privacy risk...
http://www.forbes.com/sites/eliseackerman/2012/02/25/a-closer-look-at-google-public-dns/2/
More reasons why Google DNS is a privacy risk...
http://securitywatch.pcmag.com/dns/284235-security-and-privacy-and-google-public-dns
Reasons why using ANY DNS other than your ISP's will likely slow down your internet...
http://apcmag.com/why-using-google-dns-opendns-is-a-bad-idea.htm