Blogger provides an option at the top of all blogspot pages where you can click and visit a random page each time you click. Blogger does this in order to provide an extra amount of traffic to blogs and also for those bored ones checking on blogs at random.
I found this link at URoulette. Here you can visit random webpages by simply clicking on the link. This is much better since you get to visit other websites and not simply Blogger blogs.
If you want to have one such link on your website too, then include it with the hyperlink to http://uroulette.com/visit
If you do not want your visitors to get out of your page, then ensure that the random link opens in a new window. You can do this by coding the anchor link as
< a href = "http://uroulette.com/visit" target = "_blank">Random< /a>