Infinite scroll search-friendly recommendations
http://googlewebmastercentral.blogspot.com/2014/02/infinite-scroll-search-friendly.html
Pagination with rel='next' and rel='prev'
http://googlewebmastercentral.blogspot.com/2011/09/pagination-with-relnext-and-relprev.html
Google's infinite load example
http://scrollsample.appspot.com/items
or
http://stackoverflow.com/a/28458124
old lib - http://www.infinite-scroll.com/infinite-scroll-jquery-plugin/ or http://github.com/infinite-scroll/infinite-scroll