We're growing more skeptical of the turnaround in Yahoo's core business, especially with Facebook's and Twitter's growing share of the ad pie. Interest in Yahoo's core assets has risen as of late.

SAN FRANCISCO (Reuters) - Yahoo Inc plans to spin off its 15 percent stake in China's Alibaba Group Holding Ltd, responding to pressure to hand over to shareholders its prized e-commerce investment ...

That's despite the fact that as much as 70 percent of the value investors put on Yahoo's depressed shares are tied up in its international assets or cash holdings -- factors that have nothing to do ...