yes
Yes,You can type on a kindle and kindle 3G. Its touch-screen and has a keyboard. Its like a IPad but on a IPad you can play games but on a kindle you can only read.
Yes you can get on twitter with a kindle 3g.
3G for Kindle is the 3G service, known from smart phones, 3G enables you to have internet wherever you go. So 3G on the Kindle means you can take your Kindle anywhere being able to download book, browse the internet, etc.
Yes, the Kindle (I have the K2 International) does have 3G connectivity.
you use the keyboard on the kindle keyboard for
The Kindle keyboard is better IMHO. The keyboard version has tactile buttons - instead of a touch-sensitive screen.
Via the keyboard: Kindle Fire/Touch:- Touch Screen Keyboard Kindle 4 (2011):- On Screen Keyboard Controlled By 4-Way Controller Kindle Keyboard & All Previous Generations:- Full Physical Keyboard
The Kindle3 Graphite Wi-fi (6" display, international) is $139 The Kindle3 Graphite 3G + Wi-fi (6" display, international) is $189 The Kindle DX 2nd Generation 3G (9.7" display) is $359 The latest generation Kindle 3G (9.7" display, graphite) is $379. In the US, the item ships for free with Super Saver Shipping. Bear in mind that in many countries (except the US) you'll need to pay import duties (I sent it to an Eastern European country back when the price was 255USD and the recipient paid the equivalent of 55USD in duties). And you have to buy the books to download onto it but they are only about $10.00 or so. And there is free Wi-Fi, so you can buy a book anywhere. I have one and I love it. :)
There are multiple digital book readers out there, waiting for someone to review and/or buy them. You can find reviews in "PC Magazine", cnet.com, various blogs, digitalbookreaders.com, and nextag.com. For different types of digital book readers, there are: iPads, iPod touches, Kindle Fire, Kindle, Kindle 3G, Kindle Keyboard, and E-Books.
Yes the kindle with the keyboard can read out loud it has the "text to speach" function.
Not on the kindle that has no color and has a keyboard at the bottom.
No!