That was quick. On Monday, the blogosphere stumbled on a new mobile feature from Facebook called ‘Find Friends Nearby / Friendshake’ (link – now dead). As described on the site, once signed in you could see other people nearby also using the service. By Tuesday the page had been pulled, and FB had communicated the following: “This wasn’t a formal release – this was something that a few engineers were testing. With all tests, some get released as full products, others don’t. Nothing more to say on this for now – we’ll communicate to everyone when there is something to say.”