I've used some of those questionable methods myself over the years.

All the questionable methods highlighted in these programmes are as a direct result of the big supermarkets' obsession with profit margins.

By using such questionable methods, the tax authorities were no better than the criminals they were trying to catch.

For there will not be one that hasn't cut corners or used what will seem to some questionable methods to pursue a story.

They most notably meet with a group of radicals with originally noble goals but questionable methods.