Pinterest provides a widget builder but it only provides a single pinboard. The code I provide here will allow you to rotate randomly on each page load between as many pinboards as you would like to include.
Have there ever been any posts about how horrible IE is to developers?
In a previous post, I have compared print version of the Brainerd Dispatch and the website version of brainerddispatch.com. Here are comparisons of different newspapers with their online counterparts.
Of course, this is not fair because it is a "static" screenshot of the website so you do not get the pleasure of the flashing ads, expanding ads and popup ads as you would with the real website experience.
Ask just about any web user and they will tell you they despise popup ads. Web users hate them so much that browsers build the functionality to block them directly into the browsers. Yet, advertisers still pay a bit of money to websites to unleash them onto their audience who may not have an enabled blocker. Cost to the advertiser is rather minimal. Cost the to that portion of the websites' audience I'd have to think is severe.