Google now started to label pages that include search results. For some of these pages, Google's snippets now use lists, so you can distinguish between separate items. "These snippets are twice as big as the regular snippets (4 lines vs 2 lines) and they include useful information like prices or dates.
Sometimes Google shows similar snippets for blogs, especially if homepages look like search results pages," Alex.
Google's snippets usually include one or more excerpts from the page that include some of your keywords and are separated by ellipses.