Yes you can.
The HTC Thunderbolt will allow you to talk and surf the internet at the same time. Also the Iphone includes features that will allow you to surf the internet mid-call.
Google Talk can be used on the iPhone.
The latest iPhone is the 4s. That's in 2011, it was launched on the 14th October and its best features are 2 times faster internet then the iPhone 4, an 8 mega pixel camera, and Siri which allows you to talk to the device and make it do what you want it to do!
Straight Talk does not advertise any iPhone on their web site. As of this date, Straight Talk does not have any plans to include an iPhone in their stable of phones.
yes
A wireless connection. Need to hook it up through a service provider, or through wifi. you can then download an app such as Skype, and conduct your strange talk.
yes if its take more than an hour and after 7pm everyday it for free to talk
Yes
dont talk about where you are and leave personal information private
Yes you can.
Yes, it can 'talk' to you for example by reading aloud reminders to you.
You can download this app on the iphone and talk to the kaulitzs twins.