Link shortening is great for tweeting about your books, sharing links on Facebook etc, sending out emails. Your shortened links will look like this: http://snig.gr/1
Snig.gr can tell where in the world you readers are based, and sends them to the appropriate Amazon website. Visitors from the UK will be redirected to your book on the Amazon.co.uk website, those from Germany to Amazon.de etc. This means the reader is never redirected to the 'wrong' site, unable to click and buy your book.
Detailed stats will let you track the efficiency of your advertising campaigns. Tweeting about your book? See how many people clicked. Posted on Facebook? Our stats will let you know what's going on...