McAfee Site Advisor says it isn’t dangerous and said downloads were free of adware etc. I downloaded it today and it tried to put all kinds of crapware on my computer. It asks if you want it and even when I said no to everything but the compression software it still added an extra program to the download. As soon as download was complete I uninstalled 7 Zip and it blew out my desktop and I had to manually reboot. I then uninstalled Net Assistant for Firefox which it had added to my download. So regardless of what McAfee says, I would be cautious with this program, it may or may not be insidious but it will do it’s best to install software that you did not ask for nor want.
Sadly it was on the site called addictivetips that had a program for synching Google Calendar with Windows 7. Windows Live Calendar Gadget may be a fine program but since 7 Zip was on the same page I am now gun shy of anything I would get on that site. This may be incrimination by association but I’m sick of stuff trying to be added to my computer without my wanting it. So I will continue to manually synch my Outlook and Google calendar.