Promote your site, Affiliate links, CPA or Anything Else. You know this is big part of Social Media Networking & Social Media Marketing.
Do not need to expend huge money for product/web advertising.
★★★ Benefits of Works ★★★
You will get 20-30 high quality backlinks for your site that automatic created after Put your URL in Facebook group.
Over 25 million People will know your website / product / service Just by one or more message.
It will expose your website / product / service to million by million mixed people around the world.
This is big part of SMN (social media networking) & SMM (Social media marketing).
8-11 million+ people will get email notification by FB automated email system. So, it is big part of email marketing.