When I upload a file for visitors to download, Weebly renames it, replacing spaces with the underline character.  This is a huge problem for me because the files I use reference other files of an exact name, so now i have to edit the internal code of every file I upload, not just its name. This is very inconvenient.  Avoiding spaces in file names has not been a requirement since the DOS days.
Suggestion: please allow spaces to be used in file names.