If you have a WordPress installed on your own server and you usually follow WordPress Help you already know how to add the functionality of infinite scroll in WordPress that quality that your home page never ends for, when you reach the final extends to show more publications, to infinity (well, not until the first entry you published).
Well, nothing, Automattic guys seem to like liked this feature and they have included it by default in WordPress.com so do not be alarmed if suddenly your WordPress.com blog never ends to show entries on the cover.
And if you do not like it, if you prefer to use the Traditional link style to " Previous entries ", just go to the " Settings -> Reading " of your WordPress.com desktop and uncheck the box next to the line called " Until inf Inito and beyond ", yes, the famous phrase from the movie Toy Story (" to infinite and beyond "in English), right where it says that of" Scroll infinitely ".
What do you like? Well, nothing, you leave it, the scroll will be automatically loaded in blocks of 7 entries each time which is what is configured in the plugin they have installed for everyone.