Google is reported testing a new feature that allows specifying “how detailed the summary blurbs in their search results will be?” A user posted, following three options are available: S – Small (shows no description), M – Medium (shows a 161 character description), and L – Long (shows a 638 character description). The L – Long setting apparently shows a meta description and on-page content, so it's much easier to distinguish between good pages with real info as opposed to keyword list spam or stub pages with just a deceptively nice meta description.

Source:→ TechCrunch