Londonist arrived at Harvest Twestival a little late last night but was, nonetheless, overwhelmed by the party atmosphere and by the sheer number of attendees. The event was gleeful, tipsy and (we can only imagine) the first of many more high profile Twitter-inspired events in London (all promoting, RSVPing etc was conducted via the micro-blogging site extraordinaire, Twitter). Held a few steps from Trafalgar Square at Doon (Albannach’s swank downstairs bar, this “tweet-up with......