system of the credit bureaus? I have heard they will be fixing it soon. Any ideas?

Credit 'piggybacking' will be repealed by FICO in September 2007 to make matters worse they will be doing this retroactivly so that anyone who recieved a benifit from this in the past will loose the benifit they gained.

I haven't heard of any new loopholes anyone has found, but I am sure someone will find one sooner or later!

No. I don't believe it either. Each of the bureaus has their own method for calculating so it is hard to imagine they all have the same glitch that you would like to exploit.