Well, maybe I'm not the first one suggesting this but...
I think CCleaner resuts log (i.e. list of files [to be] removed displayed after clicking the 'Analyze' or 'Run Cleaner') would be much more useful if it was displayed in a tree structure based on categories. The curent log can be really long at times and it's not really easy to find category headings and/or files in each category.
I think a tree structure with expand / collapse buttons (the default being collapsed) would make it much more easier for users to browse and skim through analysis / cleaning results.
Alternatively, a less convenient but definitely easier solution would be simply to highlight individual categories (for instance using bold typeface and paragraph breaks to split the 'endless block of text') and/or indent files within categories.
Anyway, since this is my first post on these forums, let me say thanks a lot Piriform for you excellent products! Keep up the great work guys!