Hi jayconolly-ga,
Good day and thanks from your question.
The following reasons are given by Google as to why a site may be
dropped:
1. Changes from one index to the next.
Each time we update our database of web page (about once a month), our
index shifts: we find new sites, we lose some sites, and site rankings
change. If your site was dropped from Google and you have not made
major changes to it in the last month, we will likely pick it up again
in our next index. It's possible your site was simply inaccessible
when our robots tried to crawl it.
You may want to check and see if the number of other sites linking to
your URL has decreased. This is the single biggest factor in
determining what sites are indexed by Google, as we find most pages
when our robots crawl the web and jump from page to page via
hyperlinks. To find out who links to your site, use Google's link:
tool.
It's also possible your rank decreased because other sites were found
and assigned a higher rank. You can be assured that no one at Google
has hand adjusted the results to boost the ranking of a site. Google's
order of results is automatically determined by several factors,
including our PageRank algorithm. Please check out our "Why Use
Google" page for more information on how this works.
2. Multiple indices
We update our index about every four weeks. If you happen to enter the
same query repeatedly while we are in the process of posting the index
at our various data centers around the country, it might seem like you
are seeing inconsistent results from Google. What is actually
happening is that you are seeing a result from an 'old' version of our
index one time and a result from a 'new' version the next. Due to the
size of our index, we can not simultaneously post a new index at all
of our data centers, which may result in this behavior for a short
period of time.
3. Other reasons
If your page does not appear at all, there here are some other
possible explanations.
Your site may not have been reachable when we tried to crawl it
because of network or hosting problems. When this happens, we retry
multiple times, but if the site cannot be crawled, it will not be
listed in our current index. If it was a transient problem, your site
will likely show up in the next index, which will be completed in a
few weeks.
A technical glitch on our side may have caused us to 'miss' your site.
In crawling more than 3 billion pages every few weeks, our system
experiences hiccups from time to time. Again, this is a transient
problem, and your site will likely show up in the next index. Please
be patient with us during this period, as we are not able to modify
our index by hand to add sites missed in this way.
The contents of your page or the links pointing to your page changed
significantly and you no longer have a sufficiently high PageRank, or
your page had low PageRank to begin with and a small change caused you
to be dropped from the Google index.
Your page was manually removed from our index, because it did not
conform with the quality standards necessary to assign accurate
PageRank. We will not comment on the individual reasons a page was
removed and we do not offer an exhaustive list of practices that can
cause removal. However, certain actions such as cloaking, writing text
that can be seen by search engines but not by users, or setting up
pages/links with the sole purpose of fooling search engines may result
in permanent removal from our index. If you think your site may fall
into this category, you might try 'cleaning up' the page and sending a
re-inclusion request to help@google.com. We do not make any guarantees
about if or when we will re-include your site.
[://www.google.com/webmasters/2.html]
Also, the following guidelines are given :
- Make pages for users, not for search engines. Don't deceive your
users, or present different content to search engines than you display
to users.
- Avoid tricks intended to improve search engine rankings. A good rule
of thumb is whether you'd feel comfortable explaining what you've done
to a website that competes with you. Another useful test is to ask,
"Does this help my users? Would I do this if search engines didn't
exist?"
- Don't participate in link schemes designed to increase your site's
ranking or PageRank. In particular, avoid links to web spammers or
"bad neighborhoods" on the web as your own ranking may be affected
adversely by those links.
- Don't use unauthorized computer programs to submit pages, check
rankings, etc. Such programs consume computing resources and violate
our terms of service. Google does not recommend the use of products
such as WebPosition Gold™ that send automatic or programmatic queries
to Google.
[://www.google.com/webmasters/guidelines.html]
I hope this answers your question. If you have any clarifications,
please don't hesitate to ask. Thank you for using this service and
have a nice day
Warm regards,
aditya2k |
