yep, what Hugo said. ... I work with graphic design myself and it hasn't helped me much in making the actual maps, but it helps with composition, positioning elements and of course knowing the programs and printing techniques.

Concerning locking threads - we don't do that (except from challenges), you might not be the only one who wonders about this so this thread will be open for.. eternity... MUHAHHAHHAAAAHHAA... *lol*