"Has anyone volentarily re submited thier 2006, 2007 and 2008 tax returns to reflect un reported eBay profits?"
???
Most of us have already filed out business income properly, year after year. There is nothing to change.
CRA is after those who have not filed or under-declared their business income.
Those sellers who have contacted CRA to revise their income will certainly NOT tell anyone on a discussion board!