Last month, I invited readers to take over the authorship of my  column. You stepped up admirably. My Web site, AgencyIdol.com, is  bursting at the seams with your profound, pithy submissions. But the problem is, I'm suspicious of your motives. When you weighed  in on whether you thought non-professionals could create professional-quality ad content, a majority of you said no. But here's my question: Why should I believe you? After all, if all you non-columnists out there are perfectly capably of writing a column, how can I trust your conclusion that non-creatives are powerless to do  creative? OK, your arguments sound persuasive enough. For instance, some of you  contend that corporate sponsors will inevitably meddle with the  creative: I don't buy that these are user-generated ads, said  Anonymous. Real users would come up with [something] more  interesting. Your strategy is showing. Big Al said: &