I once implemented infinite scroll that 1) didn't auto-scroll from the first page, you had to click to continue and then it would infinite scroll. This way, peo

I once implemented infinite scroll that 1) didn't auto-scroll from the first page, you had to click to continue and then it would infinite scroll. This way, people could see the footer and didn't have auto-loading content unnecessarily and 2) the infinite scroll worked bi-directionally. 5 "pages" would be loaded at any given point, with the goal that the user would be on page 3, in the middle of the stack of pages. This way, memory was kept low, and we even implemented the History API so you could link to the pages by post ID.