Thank you for your asnwer. One last question. Are links to my website, placed on Facebook pages or groups, beneficial for my SEO?
There are tons of business based social networks. You can use the popular social media sites like facebook, twitter and the likes but remember that the vast majority of people using these sites are there for one thing only, to socialize. Do a search for business social networks or business social networking and you will definitely come across quite a few of these sites which cater to online marketers and not just socializing bugs!!!
I can prefer LinkedIn.com because the variety of people using this socio networking website totally professional and versatile people! although other network absolutely do have professionals but density of professionals is much high on LinkedIN
As your business social networking is concern we would definitely want some creative networking idea, so that can have better understanding of the portfolio and processes for improving an organization's effectiveness to get goal oriented results. <a href="http://www.ghostpapers.com/">Term Papers</a>
Social networks help you in getting more visits to your site only if used properly. If you socialize with like-minded people in business communities, that will definitely help in the long run.
Twitter is used as social networking, social media and micro blogging. You are informing to users about the services with in a shot text message. Facebook is a Social networking site. This helps you for promotional concepts like personal or business oriented promotions.
It depend upon you that how you use each one in a better way. Only posting links that are not useful then don't waste your time on social media.
From the point of view SEo its not helpful because these links are no-follow links but yes driving traffic gud