Doubleclick and NoFollow

[whis]

Hi,

I'm trying to work out whether a group of links to my site are Follow or NoFollow.

There is no rel=noFollow on the link but they do appear to go through Doubleclick (the link begins with this http://googleads.g.doubleclick.net/), will this automatically cut-off any link juice?

Thanks.

[AlanMosley]

I have no knowledge of doubleclick, but the page will be leaking link juice thought al those links no matter what he does., so there would be nothing to gain from the website owner by no-following you.

[whis]

Hi Alan,

Thanks for responding.

I don't really understand your answer (Sorry!). Could you elaborate a little?

Thanks

[AlanMosley]

All links use up link juice. By no following a link, you do not save any link juice, you just don't pass it to the linked page. So the website owner has nothing to gain by no following you. The most common use of no-follow these days is to discourage spammers placing links in comments and forums.

did you place the links there? then it may be that the owner of the site will no follow you, Did he pace them there, then he has nothing to gain by no-following you.

[whis]

ah now I follow. (no pun intended)

The links were placed there by request and I am sure the website wouldn't purposely noFollow the links because, as you say, they would gain nothing. But they go through doubleclick, which usually suggests a sponsored or paid ads. Obviously sponsored or paid ads should be NoFollow but these links aren't paid advertorials, they are natural links. So I just wanted to know whether something going through DoubleClick automatically kills any juice.

[JarnoNijzing]

Ross,

it depends on the DoubleClick policy which I believe is completely nofollow.

As an additional explanation to Alan's statement:

Normally about 85% of a page's value can flow to another page on another website. If that links points to another page again only 85% of that can pull through, so theoretical:

Lets say website A has a value of 5 and link to website C through DoubleClick (B)

Hop 1: Value a * 85% = 4.25 juice flow

Hop 2: Value B * 85% = 3.61 juice flow

And that is if there is only 1 link on the page. A long long time ago when PR was everything I read an article on how to calculate PR for page x and it goes as follows:

PRx = ((1-0,15) * PRpage)/#links

So in this case is you wanted to calculate the recieved PR for page X that it got from the link on page Y (with a PR of 5 and a total of 25 links on the page) you would get:

PRx = (1-0,15)*5)/25 = 0.17

All these calculations for Page x together give you a number and that number equals a scale which in turns decides what PR wold be given to a specific page.

I personally still calculate a lot of my incoming flow like this only by now I don't focus on PR but more on authority.

Hope this will help you.

regards

Jarno

p.s. always useful for chaning your mindset about a lot of things isn't it.

[whis]

Hey Jarno,

Thanks for your detailed response. I will look into the calculations as a method.

I also think doubleclicks policy is completely nofollow, I was just looking for some confirmation.

Thanks.