Both new Windows 8 Phones by Nokia will be available in November, Russian citizen are able to pre-order them right away and these are the official prices.
You are trying to install or open an app that didn't come from the Mac App Store but you got a message saying App can't be opened because it is from an unidentified developer. This is how you bypass it.
A very useful Facebook debugger tool where you can check how your webpage looks like on Facebook when like button is pressed, without actually pressing the like button.