Some times little knowledge is a bad thing and this what which happens with people who unnecessary spam others blogs. Comment spam is the ugly part of link popularity because they are mostly irrelevant and unnecessary waste time of there readers. They also spoil the look of the site and force websites to deleted option of comments on their site. However these people do not know about the latest changes in Google. As per the latest news Google has started giving zero or no importance to links from these spa comments. Google latest algorithm they rate highest the links from the related sites provides they are from inside the text. The links from blog dictionaries and links at the bottom of the site have every less value in increasing your page rank. Therefore now it is no fun to waste your time in spamming and spoiling the look of other blog or websites. People can get lot of information on the latest trends in links and what google is doing by reading the post available through the link. More over people can use paid services like blogitive to get real benefit from links.
*adv*