The bar none coolest thing about being a writer is that I have to research what I write about and I learn so many cool things about the most common everyday things.

I was writing for a cell phone blog today and when I was looking up keyword phrases for search volume and blah, blah, blah you know the drill - I kept running across "mosquito ring tone"...which intrigued me. Did people actually want that high-pitched annoying sound on their cell phones?
I was wrong - it's not just a ring tone at all.

Here's a snipped from freemosquitoringtones.org :

What is the Mosquito Ringtone?

The short version, A tone outside the audible range of hearing of most people over 30. This means that you can get phone calls and receive text messages in class or school without teachers hearing it. For more in-depth information on how the mosquito ringtone works, please see the Mosquito RingTone FAQ. For information on how to get the ringtone on to your phone, see our Mosquito Ringtone How To Guide.