Can Twitter help my Google search rankings?


Updated 12 March 2014: simple answer is now 'no' --find out why

The simple answer is 'yes'. 

A help forum comment from Google representative John Mueller explains:

Rest assured, Googlebot doesn't just count words on a page or in an article, even short articles can be very useful & compelling to users.

For example, we also crawl and index tweets, which are at most 140 characters long. That said, if you have users who love your site and engage with it regularly, allowing them to share comments on your articles is also a great way to bring additional information onto the page. Sometimes a short article can trigger a longer discussion -- and sometimes users are looking for discussions like that in search.

That said, one recommendation that I'd like to add is to make sure that your content is really unique (not just rewritten, autogenerated, etc) and of high-quality. to bring additional information onto the page. Sometimes a short article can trigger a longer discussion -- and sometimes users are looking for discussions like that in search. 

 

Also, John Mueller has an awesome avi on Google+ and you should go and look at it :)