They don't even have to be in the form of a sentence. One downside to FFA links is that they're temporary . These sites receive new links all the time, and your link will quickly be superseded by new submissions. Also consider submitting the URL of the FFA page containing your link to search engines to make sure the new link is indexed. Another downside to FFA links is their poor quality .
Most search engines use sophisticated formulas to evaluate links between sites.
For an overview of the factors that determine link popularity, see our article on the subject . Finally, since FFA sites are in the business of gathering e-mail addresses, whatever address you provide will be deluged with confirmation messages and spam. If this is a price you're willing to pay, create a new e-mail box just for FFA submissions. That way you can delete the contents every morning without having to sort through all the junk. Exchange programs Exchange programs are comprised of webmasters who agree to link to one another.