A computer is the main device used for Twitter. However, mobile phones such as iPhones have a down loadable application that allows you to Tweet from your mobile phone.
It's a Twitter app that you can use on an android device.
Twitter still does this. Clicking on the tweet will show you which device the tweet was sent from.
You can access Twitter on any mobile device through Twitter Mobile or Mobile Internet.
Nope you acn use it online at www.twitter.com
You can use Answers.com's Hoopoe feature from anywhere that you can use Twitter. Just tweet your question @AnswersDotCom and sit back and wait for the answer reply.
Yes. Various application stores have a free twitter app, without advertisements.
Twitter does not use apps or games like Facebook does, so unfortunately you can NOT use Farmville on Twitter.
Anyone can use it..... unless the twitter is not blocked in your country.
Depends on how much you decide to use Twitter.
There are no age requirements to have a Twitter account or use a Twitter account.
Either a computer/laptop or a mobile phone.
No, Twitter is a free service.