well, i'm about to share a synth that takes lots of stuff from different peoples' works...and i have tried to credit them where i could, but sometimes it's hard to remember who made what patch. 

and i was thinking about what to do about crediting others..

and i came to these conclusions:  credit when possible, but if you forget someone don't worry too much - they'll get in touch if they are worried.  most important is to share your works.