My team is looking at implementing an infinite scrolling page while maintaining good SEO. We're following Google's advice for infinite scrolling SEO from this article: http://googlewebmastercentral.blogspot.co.uk/2014/02/infinite-scroll-search-friendly.html
and this example:
It looks entirely possible to make endless pagination SEO-friendly so long as each of your pages is separately addressable using
"prev" and the HTML5 history API is used to alert the DOM when a new page is loaded.