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From what little I know about using these filters, I have defined them to myself as follows -
1. "allintitle:Keyword" - Ranks sites which confine to one basic rule that all of them have that Keyword in their title. Having confined to that rule, their order is decided by other factors such as PR. If a site was ranked for that Keyword at #1, without having the Keyword in Title (ranked on account of say higher PR and Keyword in backlinks), wouldn't rank after using allintitle.
2. allinanchor:keyword - Ranks sites, all of which have the Keyword in their backlinks. Again the order is defined along with number of keyword rich backlinks and PR/theme of backlink sites, also by other factors such as site's PR, Title etc.
Same goes for allintext, allinurl.
Ideally, if I wanted to know, why am I ranked at say #15 for the Keyword, I would use all combinations and see then respective ranks. The combiantion (say allintext) I rank the lowest, is what I need to improve upon to get higher rank.
Well, practically I have seen many aberrations but overall works fine.
Please correct me if I did a blunder in analysing it.
P.S - Run a query "BPO" with and without allintitle. Difference is easily noticeable.
I *suspected* that there searches were traditionally ordered by pagerank. But right now - who knows!
Allinurl:yourdomain.com is also a handy one for checking how many pages you have indexed during these turbulent times....
My favourite searches right now are using the Google viewer [labs.google.com...] which is quite entertaining. It shows you the cached results in a screen, and scrolls through the serps. Pick a few topics, set to 8 seconds, and then see how 'clean' the SERPS really are!
For a while now on my crucial 3 word keyphrase....Upon digging for clues as to why my index page is missing for this keyphrase, I found this....
allinanchor: - #15 (index.html)
allintitle: - #22 (page123.html)
allintext: - #57 (page123.html)
SERPS: - #57 (page123.html)
Apparently, for my keyphrase, the allintext results are matching EXACTLY what the SERPS are presenting. I checked the first two pages of results, and they are completely identical. The results vary when I compare the others. What do you guys think? Is that anything new?
(Rule 1) PageRank is calculated on a continuous basis, but this is NOT reflected in the Google Toolbar.
(Rule 2) Backlinks are calculated on a continuous basis, but this is NOT reflected in the backlink count for a domain. The full backlink data that Google 'knows about' for your site, is not actually searchable in Google on the same continuous basis. Google makes a chunk of backlink data publicly available (in searches) approximately once a month.
Titles that contain the keyphrase are ordered by PR, so this applies to rule (Rule 1) above. Forget the PR reflected in the toolbar - this couldn't be less relevant right now.
Side note: Many sites which have conducted an intensive linking campaign over recent weeks/months, should naturally see their URL climbing in the SERPs when using the allintitle: operator. This happens despite the PR count given by the toolbar, which again, couldn't be less relevant right now.
This PR data, because it is being continuously updated, is moving around datacentres continuously, without end.
Essentially, the factor at play here is the backlink relevancy, so this subscribes to (Rule 2) above. Backlink relevancy is calculated on a continuous basis. However, the real number of backlinks does NOT show when you go hunting for them in Google. Nor can they be found any other way (other than getting a feel for things by using allinanchor:)
Just like with the PR calculations, the backlink relevancy calculations are moving around the datacentres continuously, without end.
Have noticed sites with 550-750 words on page doing significantly better than sites with less text. I believe this calculation may take the form: "if a keyphrase exists on a page, rank sites according to the total number of words on that page. Pages with 550-750 words should rank highest, others outside this range should rank lower"
..or something like that :)
[edited by: James_Dale at 6:34 pm (utc) on July 3, 2003]
I have noticed that for the last few days we have been bouncing between the 60s and the 90s between the different datacenters. Also, this site was neglected for several years and I just began working on the SEO about a month ago.
results for single keyword out of 4,200,000 serps
allinanchor: - #3
allintitle: - #1
allintext: - #2
SERPS: - #6 <-> #3 switch's on a 3 day cycle then dropped for 2 day
sidenote the serps change the allin's don't makes me feel that allin data pre calculated and serps on 3 day switch. IMO
Google used to do deep crawls to build a new index. They are now doing freshdeep crawls that behave differently in many ways.
The index itself might now be set up to never again start from scratch. All future changes might be merged in with the existing index on a continiuing basis.
With the old method, there is a good chance that google would list the results for these searches in the order that they went into the various sections of the index. While it may look like it had something to do with PR, PR has a close corelation with the crawl order from the seed sites.
Now with the new method of indexing, the order that pages are listed in the index might change over time as pages are added, removed and generally reindexed.
Whether or not there is any additional ordering of the allin results going on, just reordering the initial data could cause some major changes in the listings.