"@#$% Salesforce.com — it's easy!" reads a new ad from Serena Software. What does that mean, exactly? Serena isn't exactly a competitor to Salesforce.com; it makes enterprise software tools that help companies manage their enterprise software. Boring upon boring — until you realize who signed off on the ad. That would be René Bonvanie, left. He's now Serena's head of marketing, formerly a top executive at Salesforce.com. Is Bonvanie funding a dig at ex-boss Marc Benioff through his advertising budget? Bad marketing, excellent theater.