I put a post up on here about a month ago when I first read an article that Google will be introducing infinite scroll. I saw it this morning as it seems they are testing it out. I am seeing the show more results button vs a true infinite scroll. I do feel if they roll it out in its entirety we will see this impact the importance of title tags and meta tags. If more results appear right on the first page the webmasters will have the opportunity to really sell their site. As I would believe users will continue to scroll over titles and descriptions until they find exactly what they are looking for. Especially since right now page on of the SERPs for one of our main keywords is more than 50% spam.