I think if anyone wants to continue this discussion after this message we should move it to Comic Talk and give Freddy back his thread, but before that...
I have it on good authority that documents proving the complete creation history of Spider-Man, Batman, Thor, and several other characters in question are stored in a locker in Hanger 18, Roswell, NM
Seriously, though, for me personally, I can find the "who-did-what-when" questions amusing to ponder from time to time, but--and I'm sure many of you will agree with me, here--as a reader it doesn't really make much of a difference. I love reading the Spider Queen, Tarantula, the Fly, and Spider-Man stories as they are, and no amount of speculation that a character was really just a rip-off of another character is going to change that. I don't necessarily feel like I'm reading a cheap immitation (or vast improvement, either) when reading one or the other.
I realize that for the parties involved it's a matter of credit where credit is due--something I'm generally a strong advocate for--but even IF say, Joe Simon's basic idea was
lifted for Spider-Man, that by itself doesn't mean the character would have been as successful if his original concept was the one that was used. A lot of different things go into making up a character/storyline and the real truth of the matter probably depends on many factors, of which co-incidence and mutual experience would be only two. The Joe Simon Spider-Man/Silver Spider concept as it's come down to us is already a collection of a number of elements from eariler characters. (Think Captain Marvel meets the Tarantula.) Would that mean he stole them, then? Of course not. A line must be drawn somewhere.
So, interesting: Yes. Scandalous:
.
DHFH
PS: JohnC, the Fly did have his buzz gun during the comics code, so that may not have been the reason for the gun-to-web-shooter bit, if there ever really was a change.