The old rule of thumb about DPI used to be higher DPI Better print output. 

Now if you buy a Digital Camera, the output is usualy at 2048 x 2048 @ 72 DPI.  So if going buy the old rule of thumb that High DPI is better, that would mean the digital photos shold come out crappy but they dont when printed.

Also a lot of artists here work on Resolutions of 5000 to 10000 Pixels for high printer output.

This old timer needs to be updated.  It took me a long time to drill into my head, that Screen Resolution and DPI Resolution were two sepreate things.

What is throwing me off is new Digital Cameras that produce 72 DPI pictures but at higer screen resolutions.