Most Powerful Shareware quotations
Limit use of shareware and public domain software to systems without fixed disks. If you do use them on fixed disks, allocate separate subdirectories... Public domain or shareware software should never be placed in the root directory.
If operating in a network environment, do not place public domain or shareware programs in a common file-server directory that could be accessible to any other PC on the network.
I've never regretted not making Linux shareware: I really don't like the "pay for use" binary shareware programs.
Shareware tends to combine the worst of commercial software with the worst of free software.