Blog comments
Leaving a comment on a blog can result in a relevant do follow link to individual's website. Most of time however leaving a comment on a blog turns into a no follow link, which is almost useless in eyes of search engines such as Google &Yahoo. On or hand, most blog comments get clicked on by readers of blog if comment is well thought out &pertains to discussion of or commenters & post on blog.
Spam in blogs (also called simply blog spam or comment spam; note blogspam has anor, more common meaning, namely post of a blogger who creates no-value added posts to submit m to or sites) is a form of spamdexing. It is done by automatically posting random comments or promoting commercial services to blogs, wikis, guestbooks, or or publicly accessible online discussion boards. Any web application that accepts &displays hyperlinks submitted by visitors may be a target.
Adding links that point to spammer's web site artificially increases site's search engine ranking. An increased ranking often results in spammer's commercial site being listed ahead of or sites for certain searches, increasing number of potential visitors &paying customers.
