Google and Meta Tags

I've heard a few times over the past few weeks "meta-tags are really important" or "I need to adjust the Meta Tags on my website." For the past couple years now, Google has stated that meta tags are not important for rankings. Other than the Meta Description which is used as your site's description on SERPs, Meta Tags have little or NO value regarding rank. Google will look at Title tags, Headers, Domain Age, Alt. Tags and quality INBOUND links (and other secret factors) when determining where to rank your website.
See Matt Cutts(Google Search Quality Team) speaking more specifically about Meta Tags.
That being said, I wouldn't recommend leaving your meta information blank because last I checked Yahoo, ASK and bing still do look at meta tags. At least for now...