just posting them to the internet does not relenquish one's intellectual copyright and make them public domain.
i understand why you might have assumed that using the pics would have been harmless, but i myself have had various works (images and text) that i created and have had used without permission or acknowledgement, and i know that quite frankly it can be very infuriating.
"The two seater is being joined in a few weeks by a larger two-plus-two model with a rear seat for munchkins." ~Jim Mateja, Chicago Tribune, in regards to the Z32.
Andrew Janeshek // jnshk@aol.com // 1992 NA 2+2 [Stage 2-ish]