First of all thanks for this great piece of code, it rocks!
Here is my two cents...
- Custom Folders options should include file deletion by mask (ex: delete all *.log files from folder C:\anyfolder) or let you delete concrete files (something like Custom Files), support for delete subdirectories would be great too. By the way it seems that you can specify a root unit (C:/ D:/ etc) this is a problem, for example, 3D Studio Max, Fair Use Wizard, etc, creates .log files in root, and I want to delete it automatically in each boot, why CCleaner can't do that?.
- Registry Search option, so you can find in the registry for one or multiple strings (separated by ";") and all the results will be displayed in a list that you can use to analyze/delete/backup all those registry entries (something like RegSeeker by Hover, in fact I'm currently using both CCleaner and RegSeeker just because I use a lot to clean my registry the registry search tool).
Hope you take in consideration my suggestions.
Thanks anyway.
Bye!