We worked with a small team of engineers from Twitter, Google and SayNow, a company we acquired last week, to make this idea a reality. It’s already live and anyone can tweet by simply leaving a voicemail on one of these international phone numbers (+16504194196 or +390662207294 or +97316199855) and the service will instantly tweet the message using the hashtag #egypt. No Internet connection is required. People can listen to the messages by dialing the same phone numbers or going to twitter.com/speak2tweet.
We hope that this will go some way to helping people in Egypt stay connected at this very difficult time. Our thoughts are with everyone there.
Update Feb 1, 12:47 PM: When possible, we're now detecting the approximate (country-level) geographic origin of each call dialing one of our speak2tweet numbers and attaching a hashtag for that country to each tweet. For example, if a call comes from Switzerland, you'll see #switzerland in the tweet, and if one comes from Egypt you'll see #egypt. For calls when we can't detect the location, we default to an #egypt hashtag.