Lidl calls Tesco groceries 'trash' in weekend Ryanair-style advertising blitz!

Lidl appears to have 'lowered the bar' by urging shoppers to 'don't spend your cash on trash' by shopping in Tesco. The question needs to be asked is whether such an advertising campaign can be justified? and what are the issues surrounding such a stark and attention grabbing ad campaign?

For the story, see: http://relativemusings.blogspot.com/2008/08/lidl-spend-....html