This is such a good tip that I better save it right here for future use. To hide all the Linux-like dot folders (folders with names starting with a period, or full stop), open Command Prompt and run:
ATTRIB +H /s /d C:\.*
This will fix all the current folders, but any new ones generated later will not be hidden. You'll have to re-run this script (maybe automated as a Windows Scheduled Task?).