TxtDrop.com - Send text messages for free via web

Look at your thumb and tell me if it's exhausted from typing text messages on your cell phone. Did you ever think of how much easier it is to send a brief e-mail or Instant Message than a text message? Sometimes you want to communicate to someone via his cell phone, but you are closer to your computer than your phone--or quite simply, your computer is easier, and you're tired of paying $.10 per text message. Now there is txtDrop, a free service that you install as a widget on your computer so you can send text messages to your friends' cell phones, easily, and for free. This is great for people who go over their cell phone text message limits. Also your friends can reply to you and you can receive their text messages in your email.

Our goal is to make web based text messaging free and as easy as possible. Which is why we let you do everything in one easy step, on one simple webpage. Using our database driven technology, txtDrop enables users in the United States and Canada to send text messages with instant delivery. No more need to pay your cellular provider up to 10 cents for sending your friend a text. Just enter your name, your friends mobile number and your message and we'll send your text instantly. Completely free of charge.

It's easy to install, free to use, and an intelligent way to take advantage of the ongoing relationship between the web and mobile phones.

How will TxtDrop manage to continue their service without charging some fee? And does it operate with all mobile service carriers?