This is sort of an off-the-wall thing, but in the process of old-junk-cleaning I ran across a copy of Macintosh PC Exchange at my parents house that was still in the shrinkwrap. (For those unfamiliar, it was an app that let the MacOS read DOS-formatted floppies and would do some basic document conversions). Opened in up to see if I could get the data off the floppy before tossing it, and realized that there was a nice, postage paid registration card in there. Now I'm tempted to fill it out and mail it in just for the hell of it. If whoever deals with those things might actually realize how old it was, it's totally worth it. Should I?