Spam is it good or bad? every morning when I open my website and go to  admin,  a surprise spam waiting in my dashboard.  So I asked my colleagues about spamming and they told me that it is good for the spammer because it leaves link to their website.  Now I know, some bloggers using this kind of techniques leaving spam just to create more traffic every time you click the link and to add it also create bounce from your website to their website if  you will approve the spam from your comment side.