I think for Marketing Purpose... We can find alot from facebook... But from google we can get more by search engine optimization
Both are good website . Google is search Engine and Facebook is social networking site .not compare .
Actually i like both but i think both is necessary in separate ways. Necessity of google is unquestionable and facebook is the most popular social media. I consider google as more useful than facebook. i recommend a site for you-http://www.zmili.com/
In terms of finding information, Google is the number one resource. If you are looking for social networking, go for Facebook. Each has its own place and time.
If your talking about promoting a website - i like both Google of course is great to get search traffic to your site Facebook is great for adding a facebook page to share about your site & promote it! I like both!
I use Google for affiliates and ads while Facebook for page and build a brand name and for social network.
Both are from different categories Google is a Search Engine and Facebook is Social Messenger,Why you people mixed it both???
it depends on the user. facebook can entertain users as well as google. facebook is limited while google is unlimited.