Google Link: Command – Busting the Myths – Moz
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By: Rand Fishkin
November 23, 2009
Google Link: Command – Busting the Myths
Search Engines
The author’s views are entirely his or her own (excluding the unlikely event of hypnosis) and may not always reflect the views of Moz.
I’m a big Google fan – my wife often sleeps in their t-shirts, I speak on panels with Googlers all the time and I’ve even got a Google water bottle for working out (which happens all of once a month these days). However, I am NOT a fan of the Google link command, and I’m shocked by the number of folks who operate in and around the SEO, webdev and technology industries who haven’t realized this.
Here’s what Google themselves have to say on the matter:
You can perform a Google search using the link: operator to find a sampling of links to any site. For instance, [link:www.google.com] will list web pages that have links pointing to the Google home page. Note there can be no space between the “link:” and the web page URL.
To see a much larger sampling of links to any verified site in Webmaster Tools:
On the Webmaster Tools Home page, click the site you want.
Under Your site on the web, click Links to your site.
Note: Not all links to your site may be listed. This is normal.
Here’s what Matt Cutts (head of Google’s Webspam team) had to say in a video on the subject:
The short answer is that historically, we only had room for a very small percentage of backlinks because web search was the main part and we didn’t have a ton of servers for link colon queries and so, we have doubled or increased the amount of backlinks that we show over time for link colon, but it is still a sub-sample. It’s a relatively small percentage. And I think that that’s a pretty good balance, because if you just automatically show a ton of backlinks for any website then spammers or competitors can use that to try to reverse engineer someone’s rankings.
Google themselves is telling us not to pay too much attention to the link command, but that doesn’t seem to be stopping folks. Let the myth busting commence.
Myth #1 – The Google Link Command Returns Accurate Numbers
Nope. Not even close. Google themselves say the numbers aren’t accurate and that they’re showing a small sub-sample. The numbers show this as well. Check your link counts with the Google link command vs. the number inside Google’s Webmaster Tools (when you verify your account, you’ll see them shown). Here’s the stats for SEOmoz, for example:
Google’s link command claims 1,590 links. Let’s see what Webmaster Tools says:
Hmm… 381,403 seems slightly larger than 1,590. In fact, the link command is showing me 0.4% of what Webmaster Tools says exists. Running this analysis on another few domains that we have access to in Webmaster Tools, I saw numbers ranging from 0.1% to 4.4% (meaning there’s not even any consistency between in the percentage of links from the two counts).
Myth #2 – The Google Link Command Returns Important Links
Tragically, a long time ago (pre-2004), Google did show only important links via the link: command, which created the myth that exists to this day. In fact, the links shown in the link: command have no particular importance or relevance. They are truly a random sample, including links that are nofollowed, links from pages that have had PageRank penalties applied to them as well as links that do pass link juice and value.
Myth #3 – The Google Link Command Returns Links in Some Kind of Order
No one in SEO has been able to show any ordering of any kind in the Google link: command’s results. Important, well-known websites may be listed on page 2 or page 20 of the results, and it is likewise with spam, scrapers and low quality sites that Google’s likely not counting. In Site Explorer and the web results, Yahoo! appears to do some type of ordering, tending to show more important links, pages and sites before less important ones (though not with great consistency). Unfortunately, many SEOs suspect that, should Microsoft’s deal to power Yahoo! with Bing results go through, Yahoo! is unlikely to maintain their own web index (and thus, link, linkdomain and site explorer will be gone).
As exemplified above, Google appears to be very random indeed when showing link: results.
Myth #4 – The Google Link Command Returns a Numerically Representative Count of Links
This is possibly the myth that’s most disturbing of all, primarily because so many operators in the SEO field belive it and track the link: command count as a reliable, useful metric. Nothing could be further from the truth – and here’s some data to help back it up:
Root Domain
Google Link: #
(external + internal?)
Yahoo! Linkdomain #
(external only)
Linkscape Count
(external only)
Yahoo.com
3,650
331,000,000
201,681,667
Recovery.gov
7,550
328,000
155,780
Facebook.com
165,000
567,000,000
116,748,934
Real.com
11,400
4,600,000
5,596,165
Adobe.com
51,200
124,000,000
78,550,468
Reddit.com
18,300
128,000,000
29,071,291
Twitter.com
224,000
515,000,000
132,528,763
Salon.com
12,300
3,420,000
1,535,342
SEOmoz.org
1,590
957,000
486,405
NYTimes.com
7,990
21,200,000
12,884,758
TurkeyDayRun.com
3
68
22
Ninme.com
539
42,000
3,149
Burgerking.com
942
106,000
23,761
Alaskaair.com
1,010
44,000
38,358
Smashingmagazine.com
8,730
1,130,000
592,054
Smithsonian.org
4,860
25,700
14,545
I collected the data above spur of the moment, so I won’t try to claim great statistical integrity. However, looking at Google’s link: command results, the best I can say is that Google has some relationship to the others within 1-2 orders of magnitude, though they may be directionally inaccurate much of the time as well. Just look at the NYTimes.com for example – Google claims they have 2/3rds the links that Salon.com has, yet Yahoo! and Linkscape agree that, in fact, NYTimes.com has 6X+ Salon.com’s link total.
These are not numbers you want to hang your hat (or any crucial business decisions) on.
Myth #5 – The Google Link Command Tracks Accurately Over Time
Unfortunately, I don’t have data points I can show, but our observations over time indicate that Google’s link count in Webmaster Tools might rise, along with the Yahoo! and Linkscape link counts, yet the Google link: command will show lower numbers. The reverse is sometimes also the case. Without directional consistency, even when compared against their own counts, it’s very hard to take the Google link: count seriously.
Myth #6 – The Google Link Command is Up to Date
Most SEOs & webmasters have noticed that the Google link: counts update infrequently, inconsistently and most often in correlation with toolbar PageRank updates (another data point I’ll need to takcle in a future post). These updates from Google occur every 2-10 months with little warning about when they’re coming or have happened. If you watch sites like closely, they’ll report many of these as they occur.
The next time someone tells you their Google link: command numbers as a metric for SEO, competitive analysis or anything else, make sure they read this post. Google’s not nearly as up-front with the information as they should be (honestly, removing the link command would save so much time and effort for poor site owners who get needlessly confused), but hopefully as a community, we can help build more awareness around this issue.
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