Rob Cockerham of Cockeyed.com says:
I wasn't sure if just tearing a Credit Card application into tiny bits was good enough to prevent dumpster-diving theft, so I did a test.
I tore one up, then taped it back together again, filled it out with a DIFFERENT address and CELL number.
Sure enough, in four weeks I was rewarded with a shiny new card with a $5,000 limit.
Now I guess I'll go buy a shredder with this card.