Isn't it embarrassing when you find yourself stuck for an opinion in polite conversation? Like those times when you're standing in the pub, and someone pipes up: "What about that Cristiano Ronaldo, then, eh? What a player!" And so you start to cry, and repeatedly pat the crown of your head with the palm of your hand, and wail: "Oh me don't know! Me don't know not nuffink!"

But now, providing you're not too troubled within to switch a computer on and off, you can blind your conversational assailant with statistical science - and it's all thanks to our brilliant new interactive chalkboards! "He's made 38 more forward passes than Tony Hibbert this season, I can tell you that for free, and most of them have gone to feet an' all," you can scream back at them, an inch from their face. Just before being quietly escorted from the premises.

There's no need to thank us for any of this, we're here to help, that's what we're all about. But we'd like to thank you for posting many in-depth tactical observations this week - so much so, in fact, that we're giving away a signed Premier League shirt to our favourite chalkboard! Here's the week's top three...

3) Barça bother

Fierzee has spotted that, with Michael Essien in the team ahead of John Obi Mikel, Chelsea concentrate on attacking down the right flank much more than they did earlier this season. "It is effective," notes Fierzee. "This is noticeable in the Champions League tie against Liverpol, but also the matches against Tottenham and Newcastle. Whereas against Bolton, John Obi Mikel sprays the ball left and right. I strongly believes this concentrated effort from Essien will pay dividend against Barça, whose left back slot is, for me, the weakest link."

2) Cesc's no No10

It might be sexier to play just off the striker, but marhabr's chalkboard comparison shows that Cesc Fabregas is so much more effective when dropping deep. Arsenal lost the first half 1-0 at Wigan last weekend, with the Spaniard wasting ball after ball down the inside-right channel - but they won the second 4-0, Fabregas setting up two goals and only wasting two balls in the entire half. A textbook example of successful tactical tinkering (that textbook being scratched up on a chalkboard, obviously).

1) Macheda: the new Macaulay Culkin

Thanks to four chalkboards posted by chalkmeup, of which this is one, we now know that Manchester United supersub Federico Macheda is the greatest player of all time. Or that's how he'd go down in history if he retired right now. In his entire career in All Football to date, he's made 14 passes (nine against Aston Villa, five against Sunderland), all of which were successful - and has had two shots on goal, both of course flying in. And yet, and yet ... to think your best work is already behind you at the age of 17! Like Macaulay Culkin, Tiffany and Red Rum, it's all downhill from here for poor Federico.