I need to know this for my site, does Google weigh META descriptions? I believe I heard a few months back that Matt Cutts announced that they do not even look at META Descriptions at all for the rankings, but I could be wrong. Just curious!
if you have good mata description so google gives result way description other wise way content so make your description good and use 250 characters so its totally SEO friendly and google gives preference to description it is fact.
Remember....Google is not the only search engine....their posture on meta tags has changed...... For the few minutes it takes to add then...it is worth the effort...
Definitely google gives importance to meta description too. so you need to add your important keywords on description too.
I am not sure if google use meta description for ranking, but it does us meta description for snippet. I agree with Yahoo and Bing use meta description for ranking, so it is better add it.
Google give the preference to the meta tag...when google not find the appropriate content according to the page title. then google robots pick the content of the meta tag.