Leosghost - 9:23 pm on Jun 10, 2012 (gmt 0)
IIRC grandma genie, your site is ecommerce ? ..mandatory registration would kill sales on such a site..
How long someone spends on each page of your site depends on what is on each of the pages..and how fast your visitor reads/ takes in information..IMO 60 seconds is not a long time to spend on a page if the page is selling a product, or has less than 1000 words of text..
Restricting access via Geo IP is a "valid" solution if you don't intend shipping to the whole world..