[quietbritishjim]

You could change the option to hide file extensions in the explorer settings windows; no registry tweak was needed.

Not wanting spaces in file names is certainly a bold opinion! I think you'll find yourself in a very small minority there.

[zzo38computer]

> You could change the option to hide file extensions in the explorer settings windows; no registry tweak was needed.

The is a setting in Explorer, but it does not affect all file types; some (such as .lnk) are not affected by that setting and hide the extension anyways.

[h2zizzle]

I don't have strong feelings either way, but I can see the perspective that underscores should suffice, and that introducing white space into filenames makes certain file and data management tasks more difficult and unpredictable.