The Speccy instructions I posted are a pre written (canned) speech that I have used many times at various support forums. As I understand it, we use the 'Publish Snapshot' method because, unlike the other methods, it doesn't publish any personal information. I don't blame you for being careful but consider the following from a tutorial that I found.
Speccy from Piriform is one of the best, in my subjective opinion the best program to extract and collect complete system specifications of your Windows PC.
Following these instructions you can publish your complete system specifications without revealing any personal information. The information cannot be used in any way to access your computer or network. Publishing the information Speccy extracts is absolutely 100% safe.
Source
If you're not sure then thats your choice, of course but I can't even unzip the XML file.