Link Exchange is a must but be sure if you link to other sites is not a link
farm. Link Exchange is belong to two way link building because it needs a
reciprocal link. To practice of exchanging links with other websites or sites,
you may request a link exchange to other websites by email or online form. You
place their link on your site and vice versa. Usually when you ask a link
exchange to another webmaster, your request is under a review, if they will
accept your request or decline. They evaluate your website if relevant or not.
More relevant sites that are linkings, the better. The two relevant sites will
gain a website rank and google page rank.
Link Farm is an irrelevant sites that contains only advertisements and no
useful information inside the website. You can not guarantee or receive point
from Link Farm, just wasting your time to link them. Instead of receiving
points, you will be penalized.
Link Farm is a website that does not have useful resources, it is only a page
and have few contents. They are after to have a Google Page Rank but Google will
penalize your site when you have to exchange link with them. Google also will
not give you points or site rank of your site.
Two kinds of Link Building:
1.) One Way Link Building
2.) Two Way Link
Building
One-Way Link Building, is a link to your site with no link back to or no
reciprocal link. To obtain a permanent link your site to the reputable and
relevant site without reciprocal or exchanging link.
Two-Way Link Building or a Reciprocal Link, involving a link to your site
from an external source and a link from your site back to the external source.