Autopager can be obtained here: https://addons.mozilla.org/en-US/firefox/addon/4925

The AutoPager Firefox extension automatically loads the next page of a site inline when you reach the end of the current page for infinite scrolling of content.

This aids with the browsing of Userlogos, as instead of having to rather tediously press the next page button, you just continue scrolling, which can be extremely effective for simple logo browsing. Furthermore, although this doesn't apply to Userlogos, it does have its own Ad filter, hence enabling more stable browsing.

The only major issue is the fact that it doesn't recognise when you have entered a new page, and if you for instance click on a link and then wish to go back, it will take you back to the original page, and not the page of the link.