google.co.id is an official domain owned by Google. Of course, they're the best out there. Safe site and trusted sources for me. Be aware of the ad results. I wish there were better ways to contact the customer support/help/feedback team.
This guide will introduce you to all the different ways you can use Google Talk. ... The Google Talk downloadable application for Windows offers many features for communicating with your friends and family. Instant messaging — Chat with all of your Google
This is how Google thinks about your privacy:
"If you have something that you don’t want anyone to know, maybe you shouldn’t be doing it in the first place."
- Eric Schmidt, Google CEO
People in countries like Birma, China, Iran, Thailand etc. should be very careful using any Google service.