I am not sure why Twitter engineers are struggling with this, and potentially misleading tech journalists (and even some well respected SEOs) with the SEO issues hampering the indexation of Twitter.com
But one thing I haven’t read about anywhere are the technical implications of +1 and the way it deals with canonicalization of votes, which currently is significantly inferior to both Facebook and Twitter.
It seems Google has given Twitter some kind of penalty, possibly for cloaking.
Watch this video for the details
First let me say, one of the best ways to get authority links is to help people, or be the first to notify people about a possible problem. Thus a big thanks to James at Online IT Guide for sending me an email to let me know of a potential hack of my Twitter account.
Leo Laporte seems a little upset with Google Buzz & Twitter – actually social media in general – to be honest in many ways I agree with him – if conversation happens for lesser mortals like me it is because I have reached out and actively looked for conversation engaging with others.
At times it seems like Leo suggests that content might be somehow filtered out of other people’s feeds.
The Twitter retweet code places a link to Twitter on every page you include it, and they didn’t add a nofollow to the link. It is quite possible Google will decide to ignore all these links in the future, especially as it is effectively hidden and not a “vote” for a particular page. The destination of the link doesn’t show similar information to what is in the button.