How does linkpopularity effect subdomains

[Val]

When having lots good quality links coming in on your main-domain, and having content rich pages with outgoing quality-(theme)-links on your main page, how much will the effect then be on all subdomains within this main-domain?

For example: If I have like 100 subdomains with keywordphrases in them, do I have to build page popularity for all these (cloaked) pages within these subdomains, or is linking forth and back to the (popular) main-domain enough?

If someone has some experience on this subject, I appreciate some input on this subject.

Thanks
Val

Edited by: Val

[Brett_Tabke]

Each sub-domain will be treated differently Val and popularity will be required for each domain. We manage 800 third level sites...

[rcjordan]

so, does cross-linking between third level domains increase their linkpopularity?

[Val]

RCJ-> Good question, I think it will effect its popularity in some extend, but as far as I understand Brett there still have to be some incoming quality links from outside, which really sounds like a lot of work.
When targeting many keywords for a client, the work can be reduced by putting as many keywords as possible in one subdomain like this:
[keyword1.keyword2.Goes-to-folder-indicator.main-domain.com...]
The only thing I know is that Altavista doesn't like long subdomains. Before the messages has changed at the AV-add-url form, to long domainnames got the following message:

"You have entered the following URL:
[hypotheken.hypotheek.rente.hypotheek-rente.hypotheekrente.i1.nl...]

We could not connect to the host at this time.

This page is no longer valid.
The page, if already indexed, will be removed from the index. "

But this one which also has 5 keywords actually is accepted:
[lcd.projector.beamer.lcd-projector.beamers.v1.nl...]

This reduces the ability to stuff keywords in the subdomain. So obviously length would be the problem.

Brett-> How do you manage to get all these links pointing to each of your 800 subdomains? Are that links from outside? This really sounds like a lot of work to me.

Val.

Edited by: Val

[Brett_Tabke]

Yes, se's have little way of determining where one site stops and another starts so they must use the third level domain to figure it out. Some are better than others at doing it.

I really think link pop is so primative by the se's that it is almost at the url level.

[Val]

I really think link pop is so primative by the se's that it is almost at the url level.

That's really working against us!

[BK]

I agree with you Brett, but in many ways I think that is how they want it. Alow me to try to explain why:

Link Pop generally works on all links - internal as well as external. Link Pop gives variable credence and value to a link according to the 'quality' of that link. A link from a higher ranked page for example counts more than one from a low-ranked page or a page ranked for totally unrelated terms.

So if a link grants populaity only to the specific page that receives it then the sites own internal links will pass on the benefit to a lesser degree. I.e. the page linked to now ranks more highly itself and so becomes a higher quality page when determining the value of its own links to other pages.

If it granted a benefit at the domain level the SEs would soon be stuffed with lousey results where a site with 10,000 pages of total junk ranked highly simply because just one page out of the 10,000 was extremely popular to link to.

This would result in Tripod.com, Geocities.com and Angelfire.com being the top ranked sites for hundreds if not thousands of keywords totally unrelated to hosting free space.

Aiming link pop benefits at the specific URL is simply an easier and safer method to control and to avoid irrelevant results.

BK