i've suggested something similar in the past. i've noticed when modding other folk's filters that when i save for the first time it automatically credits me as the author, but i think it would be nice to have something that showed the history of authors involved that was automatic. i almost always remember to put some kind of note in my modded ones, but sometimes i forget to. so, it wouldnt bother me if there was some kind of tag somewhere that kept the history of authors intact and couldnt easily be edited out.
also, as another point on this, i sometimes remember to put 'rev 1' in the modded filter's name, but forget to put by whom and i find sometimes that i wish i knew who the original author was/is.
and, as a last point on this, since i dont always submit my filters, i dont then always write out a description and therefore i havent written down the original author's name. i may have the 'rev 1' in the title, but i may well have forgotten who. now, i have taken to including a 'by so-and-so' along with the 'rev 1', but this is only a fairly recent addition of mine when i mod something. this does then allow me to track down the original author if necessary.
If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig