Keep the poles. Keep the posters. I find nothing wrong with either and don't feel they negatively impact the urban environment. If anything, I'd argue that posters and poles enhance as they create spaces for community discourse. For example, in the City Place area they're often used to announce condo meetings or meetings on issues with Adam Vaughan. If not those, I see posters for dog walkers, movers, painters, and a plethora of other entrepreneurial endeavours, which allow people to make a living and reach an audience that it probably couldn't afford to reach through traditional forms of advertising. For an area that people seem to critique for a lack of community, these posters are a step forward.