i havent noticed any positive results from the links i have built to my site. unless you are placing a link on a site that is directly relevant to your niche and will attract viewers, it is unclear how much of a purpose gaining backlinks really serves
If you are building links yourself or buying them, make sure to vary the anchor. You'll get penalised if all your backlinks are exactly the same.
nope, but utilizing software to build your links artificially can deff get you slapped big time! I know from experience.
Yes, 1) If link builder leave a link to his service which is paid service. 2) If you request for links in freelancer and it get index by google. So request in private. one of my client request link building for site like he use title "I need 100 PR links for http://www.abc.com" So keep it hidden. Just request for link building and give url in private.