What anyone can know just from your email address (Rapportive and Rapleaf)

RapportiveI learned about this cool, new Chrome extension or Firefox plugin for Gmail called Rapportive. When you receive an email, it will present to you – to the right of the email – the social networks to which that person belongs. Within a day, I’ve seen links to one or more of the following networks to which my email correspondents belong: Twitter, Facebook, Myspace, LinkedIn, Friendster, LiveJournal, Bebo, Hi5, and Flickr. Rapportive also lists the city in which they live, and their current job title(s), not to mention of picture of them (if available). [Read more...]