Safe sex ideas that raise eyebrows

Most people know that condoms prevent the spread of HIV and sexually transmitted diseases (STDs).

But in many parts of the world, condoms aren't very popular.
Here are five novel campaigns launched by nonprofit organizations and condom companies to encourage wider use.

1. A ring tone to remember
In India, people stigmatize condoms and refuse to wear them because they believe only prostitutes must use prophylactics. Leave it to one of the world's richest men to find a solution -- the Bill and Melinda Gates Foundation donated money for a national condom ring tone.
An a cappella group sings "Condom, Condom" -- in the style of doo-wop like the contagious pop song "Barbara Ann" -- when one receives a phone call.

Despite its bubblegum sound, officials hope that the people who have the condom ring tone appear smart and responsible.