Diffusion had the pleasure of sponsoring BIMA’s Spring Party last night at Soho House. We were up on the roof terrace and despite the slight chill in the air, there was a distinct sense that the summer is here. Congratulations to Paul Walsh and Janice Cable for organising a great knees-up. Chatting with people working across the digital industry, what struck me was a real genuine optimism about the state of the sector. In fact there was a bit of pitching fatigue setting in, which we could relate to, but given the media’s fixation on economic doom and gloom, that’s quite a nice thing to be able to whinge about…