I always enjoy these 'tag yourself' photos from huge events… first came Glastonbury, more recently there was the FA Cup Final, and now the egg-chasers from Twickenham are getting involved with this panoramic beauty from the Aviva Premiership Rugby Final this past Saturday.

The execution is very good (you can seamlessly zoom into the faces of most of the 81,000 people present) and – ignoring privacy concerns for a short minute – it's a great way for a sponsor to engage an audience after an event has finished.

Indeed, more than 2,100 people have been tagged in the four hours since the photo was published this morning… not bad when you consider that most Facebook advertisers would kill for this 2.7% rate of engagement.

One thing I'd like to see though: photos of all these people heading to work this morning... it would be safe to assume a rather high rate of sunburn!