USA Today launches webcast listing service; Google won't replace Mayer

More online video news from across the web:

> USA Today can see the writing on the wall—or the viewing on the tablet. "TV on the Web" is a daily online and print listing of "the very best webisodes and video podcasts available online each day." News release

> Google won't directly replace former vice president Marissa Mayer, who jumped ship to become CEO of Yahoo! this week. Story

> Since NBCUniversal sold a staggering $60 million worth of digital ads, online viewers should be prepared for multiple interruptions during the London Summer Olympics. Story

> Speaking of advertising, BIA/Kelsey forecasts that local online/interactive/digital advertising revenues will grow 13.1 percent in 2012. News release

And finally … we know what it sounds like, but Nigerian millionaire Jason oku is raising funds to build a Nigerian streaming service called "The Netflix of Africa." Story