>>>If you know how to suppress them (some are tricky, like the application name in the print queue), there are very few things anymore that can reveal that your project is a VFP app.
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>>I don't think that it's either necessary or desirable - I've never run into a situation where I bought a product based on what it was written in, and there are a bunch of apps that use non-descript file extensions (like .DAT) where being able to cruise through the app with a hex editor to find out what language was used to develop things after the fact is the only thing that let me figure out what to do with the old apps data files...
>
>I don't think its necessary either. But I can see for a shrinkwrapped application where the authors might not want to reveal any of these details.

Why? Does the app become more salable written in VB, (something that might cause some to blush and stammer in and of itself) or Delphi, or VC++?

The odds are that somewhere, if someone really wants to know your lineage, they can figure it out...