Read the whole article and view the video: http://www.internetmarketingninjas.com/blog/link-building/how-to-ask-for-a-link-to-stay-within-google-webmster-guidelines-jim-ann-show/
Link building is an essential part of online marketing. Links bring traffic and higher rankings. You can't get ranked in Google or Bing without backlinks Internet Marketing Ninjas CEO Jim Boykin and Brand Manager Ann Smarty discuss how to ask for links and stay within Google Webmaster Guidelines. What if someone mentioned me but didn't link? Is it OK to ask to link? What if I sent someone free stuff but didn't ask for a link? Should I be worried if that person links? Is it OK to send free books to influencers? Thus may result in links and reviews! If I give away something for free on my website: I have a free eBook, tool, etc. Is it OK to ask for a link? Why can't Google create clearer guidelines as to what is allowed or now?