Breakfast briefing: What's going on with Activision's Brawl of Duty?

• It's been a strange few weeks at Activision , which yesterday confirmed that the two top executives at Infinity Ward - the makers of the best-selling Call of Duty franchise - had left the company . Lots of weird mentions of "insubordination" and "litigation" but very little detail, letting a string of rumours, anonymous reports and speculation to run riot. More to come, surely. • One woman who doesn't let people's imaginations get away from them is Yahoo boss Carol Bartz, who made a typically bullish appearance on American business news network CNBC yesterday. Suggesting that "people don't like negative news" she pushed the idea of Yahoo as a sleeping giant and said she would have accepted Microsoft's takeover if she had been in charge at the time. But she may, however, end up regretting a sly dig at rival Facebook: "What's their revenue?" she snarked. The answer, it turns out, may be more than $1bn in 2010 . • The latest episode of the Guardian's Tech Weekly podcast is now available . Aleks hosts a smorgasbord of discussions to the table, including the rise of co-working, the trouble with YouTube - and an interview with the man who started the ball rolling on theMicrosoft's browser ballot, Opera co-founder Jon von Tetzchner. Listen here . You can follow our links and commentary each day through Twitter ( @guardiantech , or our personal accounts ) or by watching our Delicious feed .