: What's the best way to make a link invisible for user but still indexable? I have several sites on the same topic but still competitive to each other. I would like to put cross links on

@Vandalay111

I would advise against doing it. Search engines get better and better at detecting such tricks. No matter what you do, some day search engines will notice it. It's not worth it and it's certainly not "white hat".

From www.google.com/support/webmasters/bin/answer.py?answer=35769 (emphasis mine):



Make pages primarily for users, not for search engines. Don't deceive your
users or present different content
to search engines than you display to
users, which is commonly referred to
as "cloaking."
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?

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