DNS hosting with condition of set up redirect is provoded to every customer for free.
Redirect is automatic transfer from one URL to another.
For example, if you want to redirect the entire traffic on the current site to the personal page of the social networking site("Facebook", "Twitter", "Live Journal" or etc) or just on another domain special A(Internet address) record, referring to dns.cishost.ru (188.8.131.52), and TXT(text) record with desired redirect link must be added to DNS record management.
Let's assume that you serve on popular baby stuff sales group but yet you have no own site. Best decision will be to register domain name, and place it at free service DNS hosting «Redirect» and transfer your domain to the social page.
Also domain name looks more presentable at the company typeface than social link.