Our latest updates include customized Meta Description field for each entry as well as an automatically generated Meta Title, both of which will help to maximize Search Engine Optimization for our sites.*

Why does Google care about meta descriptions?
We want snippets to accurately represent the web result. We frequently prefer to display meta descriptions of pages (when available) because it gives users a clear idea of the URL's content. This directs them to good results faster and reduces the click-and-backtrack behavior that frustrates visitors and inflates web traffic metrics. Keep in mind that meta descriptions comprised of long strings of keywords don't achieve this goal and are less likely to be displayed in place of a regular, non-meta description, snippet. And it's worth noting that while accurate meta descriptions can improve clickthrough, they won't affect your ranking within search results.

Read more at the Official Google Webmaster Blog on good use of meta data:

Improve snippets with a meta description makeover

Meta tags and Web Search Results

Tag Galaxy is worth a spin.Once you get past the fiery star with (conceptually related) orbiting planets, the globe itself presents a surprisingly addictive interface for photo discovery.