1.) Open Candy is actually adware, not spyware. Neither is desired, though adware displays ads while spyware collects information about you, your computer, usage, et cetera. The takeaway is that adware is annoying while spyware is dangerous.
2.) Windows Defender has been replaced by Microsoft Security Essentials, a newer and more complete free security application from Microsoft. Both have had their share of low ratings from independent security analysts, though, and are best when paired with additional security software.
3.) There is a "Help Center" link at the bottom of every CNET page. From there, you can send an email (open a help desk ticket) to CNET customer support to ask questions, raise potential issues, et cetera.
Hope this helps,
John