It's the bit that is in the IMG tag, and ends with .jpg that you want.
Put that in the image popup and you get this:
@Velocio started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
It's the bit that is in the IMG tag, and ends with .jpg that you want.
Put that in the image popup and you get this: