SpinWatch, which also hosted a guided tour of agencies in London last autumn, is inviting anti-spin activists to 'know your enemy more effectively' by mustering at Usher Hall in advance of a tour of 'lobbying consultancies and PR outfits working incessantly to boost corporate power'. Gulp.
Of course, police are already on standby in the city to deal with any civil disturbances that may accompany the somewhat higher-profile marchers set to descend on Edinburgh to raise awareness of global poverty this weekend.
One PR man in the city tells us: 'A lot of companies have taken on extra security for the G8 thing. These "anti-spin" campaigners will probably be mistaken for outright anarchists - they may well end up in a cell.'
Suggesting SpinWatch's activists use their time 'more productively', our hero declares, with no hint of a tremble: 'Surely there are far more deserving culprits for their ire than us?'
Surely there are, but perhaps best batten down the hatches anyway, just in case.