It’s dead simple to use. Sign up and authorize any number of social services for Greplin to index – I signed into Facebook, Twitter and Google Voice to start. After a few minutes of indexing time Greplin then presents you with a Google-like search box. Run a query and find the public and private data you’ve locked away on those sites. Tweets, including DMs, are shown, as well as Facebook messages and Google Voice voicemail transcriptions and SMS. You can also index Gmail, Dropbox, LinkedIn and a bunch of other services.