Web Summit has come and gone. And again it took the city by storm, 42,000 people from all across the world attended what is now not so much a conference as it is a festival. It’s the Electric Picnic of technology – one big party with lights and buzz. It’s a techie dream, an overload of information and noise. But is it all just buzz or is it useful to startups? After all, it is designed with startups in mind. Over three days Dublin bares witness to the latest in digital innovations. Leading tech giants, investors and the world’s media…