Vantaggi
There are some very talented people who work at Possible - some ppl that I still miss. I was particularly impressed by some of the talent in South America: the agency acquired Gringo and another agency while I was there. Being able to pick those guys' brains was inspiring. The agency is a decent stepping stone - as long as you are proactive in managing your career, assignments, and other people's perception of you. I was in the Cincinnati office, which has a tiny job market. So it's easy for some ppl to just stay and stay and stay. When I was there, you could get lost in the work and the challenges and have fun carving out your own path. It was a lot of hours, but you could fast-track yourself.
Svantaggi
Some very embarrassing/scandalous choices were made for the Cincinnati office's "C-suite" a few years back, but those folks have exited the agency after their dangerous experiments. Now, with Shane Atchison at the wheel, hopefully morale has lifted as he appears to be a credible leader and has a proven track record. The agency pays on the poor to middling scale and attracts talent that tends toward the very inexperienced and the also-rans. If you are seeking to do great work, you need a strong team that mixes seasoned veterans with junior talent. Unfortunately, this is can't occur with the mix they have. Junior account ppl and project managers can be exhausting - and any talented and/or smart young talent at Possible tend to not get the training they need. Unfortunately they end up fleeing and being nurtured elsewhere.