I've mentioned two weeks ago that Google ongoing to label pages that take in search results. For some of these pages, Google's snippets now use lists, so you can differentiate between separate items. These snippets are twice as big as the ordinary snippets (4 lines vs 2 lines) and they take in useful information like prices or dates.
Sometimes Google is confused and shows comparable snippets for blogs, especially if homepages look like look for results pages.
Google's snippets typically include one or more excerpts from the page that include some of your keywords and are estranged by ellipses.