I have been a long time fan of CCleaner and recommend it frequently. I am also the coordinator of an education program that teaches computers to seniors. I also recommend our students use ninite.com as a simple way to get excellent programs and have them installed without the massive experience required by directly installing them.
Not having CCleaner (and the other piriform) program available through ninite.com is a real dis-service to our students (as well as the rest of us). I implore piriform and ninite to resolve their issues and add the piriform programs back on ninite.
It is really as shame to see two excellent programs/services not cooperate.