The site should soon be coming into a Public Beta period where anyone can sign up and use the site.
How can we spread awareness to experts, researchers and practitioners in the cognitive science fields?
Perhaps see whether any of the people in this list of psychology bloggers are interested in reviewing the site
When it goes public beta, I'll post a review on my blog (it has around 650 readers). Hopefully any of the other users of the site that maintain a blog can do the same.
I haven't used Quora much, but there are communities there that might be interested:
Besides standard tools as Facebook, Google+, Twitter and the f2f it is good to spread the word in places people may be really interested, e.g.:
For a lot of people, Wikipedia is the first place to start their searching. We might want to increase our exposure, by acting as sources for wikipedia to cite. If there is some wikipedia article that is missing important information (or citations) and we have a definitive answer on our site providing such information, it might be good to add a reference (with appropriate links) from wikipedia to the answers on this site.