If you find that one person is continually sending disruptive
comments from the same IP address, ban that address from being able to see
your site. Most CMSs support this, but it can also be done through an .htaccess
file on Apache servers.
Combating comment spam
Although disruption by readers can be a nuisance to a blog administrator, it pales in comparison
to the havoc wreaked by comment spam. Its ubiquity and methodical plundering
of millions of blog entries makes it the most effective spam delivery mechanism since
e-mail servers and clients were left open on unprotected networks in the 1990s.
Unfortunately, comment spammers don??™t usually expect their links to be clicked. Their
intentions are more subtle. Since blogs are easily indexed and highly favored by search
engines for their high-linking tendencies and communicative nature, spammers recognize
that links placed on these blogs will be quickly found by Google, MSN, Yahoo, and others
and help the target websites gain visibility in search engine results pages. That??™s why these
comments don??™t even try to mask themselves as real comments??”as you can see in
Figure 9-10, they??™re often just a list of domains.
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