Breakfast briefing: YouTube's rental experiment, Facebook goes HipHop

• There's been plenty of talk in recent years about YouTube - more specifically whether it makes money , deals with movie studios and potential entry into video rentals. That last idea may be on ice, after figures that suggest that the company made little more than $10,000 during a short experiment in movie rentals. Not exactly chump change (if you can spare $10k, let me know) but certainly a long way from where Google would have wanted it. • Facebook has been doing more work with the open source community of late, but its latest effort sounds pretty interesting: HipHop , a PHP compiler that it says reduces CPU load by an average of 50% (at least for Facebook itself). Actually, it's not really a compiler, but a system that converts PHP into C++ and then compiles it... will it make a real difference to web developers? Or will it only really make a difference to Facebook-style operations? • And it's time for another episode of our Tech Weekly - and apologies to anyone who is iPadded out, but we couldn't ignore the Apple - so we drag along Nick Carr to help us ponder what it all means. We also hear from a top-ranking literary agent on Amazon's tussle with Macmillan . Thirty-three minutes of aural excitement at the click of a button . You can follow our links and commentary each day through Twitter ( @guardiantech , or our personal accounts ) or by watching our Delicious feed .