One of the practices that is to be avoided is link exchange. There are many programs, which offer to barter links. The principle is simple � you put a link to a site, they put a backlink to your site. There are a couple of important things to consider with link exchange programs. First, take care about the ratio between outbound and inbound links. If your outbound links are times your inbound, this is bad. Second (and more important) is the risk that your link exchange partners are link farms. If this is the case, you could even be banned from search engines, so it is too risky to indulge in link exchange programs.Linking to suspicious places is something else that you must avoid. While it is true that search engines do not punish you if you have backlinks from such places because it is supposed that you have no control over what bad guys link to, if you enter a link exchange program with the so called bad neighbors and you link to them, this can be disastrous to your SEO efforts. For more details about bad neighbors, check the Bad Neighborhood article. Also, beware of getting tons of links in a short period of time because this still looks artificial and suspicious.
