Here’s a quick signpost to Dwight Tower’s latest addition to the English language: Decruitment. His post Decruitment: sarcasm and social niceties is well worth a read for a few ‘how not to’ notes on welcoming people to groups….
It also brings to mind a fun activity a trainer friend of mine is fond of – the reverse ideastorm. Ask the group to ideastorm around creating the problem rather than solving it. So in this case ‘how do we decruit rather than recruit?’. Then work from there to solutions….