X tips om online je concurrent in de gaten te houden

http://www.socialmediaexaminer.com/how-to-gain-competitive-insight-with-social-media/
http://www.seomoves.org/blog/online-marketing/competitor-research-using-bit-ly-not-just-a-url-shortener-823/
http://www.blueglass.com/blog/a-stalkers-guide-to-competitive-research/
http://blog.hubspot.com/blog/tabid/6307/bid/32897/How-to-Stalk-Your-Competitors-in-10-Minutes-Marketing-Hack.aspx
http://www.buzzblogger.com/spy-on-your-competition/
Afbeelding credits: xrrr