Fri Dec 28 00:03:19 PST 2018

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Sites like CNN are crawled hundreds or thousands of times each day. Since search
engines are constantly adding content to their index, they are in a constant state of
flux.
How Search Engines Evaluate Links
Through the ?eyes? of a search engine, you usually cannot control who links to
you, but you can control to whom you link.. In most cases, if bad sites link to you,
it does not hurt you. If you link back, it does. So in essence, it usually does not
hurt you to get inbound links. You should be rather selective with whom you
are willing to link out.
Start With Trust
Some search algorithms may look at the good link to bad link ratio as well. If your
site has few well-trusted links and many low-quality ones, they may filter out your
site if they suspect it of overt ranking manipulation.
When you get quality links, you are not only getting the boost those links may give
you, but you are also lowering your risk profile and naturalizing your link profile.
Some links are a sure sign of quality. For example, if you are listed in the Yahoo!
Directory, search engines know that at some point in time an editor working at a
search company reviewed your website.
If you are trying to replicate the success of a competing site, it is important to start
by trying to get a number of higher quality links before getting too many low-
quality links.
If you are unsure if something is a quality link or not, ask yourself if you were a
search engineer would you want to trust that link. If the answer is ?yes,? then it is a
quality link. It is still okay to get some low-quality links, as automated scraper sites
and other junk sites give practically all well-ranked sites a bunch of low-quality
links, but the key to doing well in the long term is to try to create a reason why
people would want to give you quality links.
Blogs and Weblog Comment Spam
I recommend viewing the web as a social medium. Find blogs with posts about
topics you are interested in and participate in the community. The whole point of
weblogs is community discussion, so it is not spam to add something useful and
link to your website from it.
Don?t expect the link to help you rank better in the search engines, but if you
participate in your community and leave useful comments, it will make some
people more likely to link to your site or pay attention to you.
An even better way to get noticed with blogs is to comment about what other
blogs say on your own blog.