The news that iOS social networking app Path uploads users' contact lists to one of its servers only adds weight to the contention--coming mostly from tablet also-rans--that iOS isn't secure enough for enterprise use. Security concerns were among those cited in a recent survey of physicians that also called for “significant software innovation” before the iPad is ready for clinical use in health care. Yet iPads and iPhones are more popular than ever--even more popular than Apple desktops. Chitika, a search-targeted advertising network and research firm, said that  iOS has surpassed Mac OS X in total Web market share for the first time, based on traffic on its own ad network. This month iOS hit 8.15 percent and Mac OS X slipped to 7.96 percent. Chitika also said iOS's market share has grown by nearly 50 percent, while OS X's fell by about 25 percent. But at CNET, Don Reisinger notes that though Chitika's network includes more than 100,000 websites, millions more weren't part of the study. And, he adds, it didn't compare iOS to Android. In December, Chitika reported,  Android accounted for 51.6 percent of all mobile traffic across its network, with iOS making up 46.5 percent. Another detail: Jacqui Cheng at Ars Technica reports that Chitika's network is more heavily weighted toward iOS than the rest of the Web. She quotes Chitika as saying:

[I]s Apple on the edge of cannibalizing its potential desktop market by focusing on its mobile device product mix? The shift towards an on-the-go lifestyle could be driving mobile device purchases by the consumer, and thereby driving the corresponding increasing in mobile web usage.

But she also wonders whether Apple cares about cannibalizing OS X, citing CEO Tim Cook's most recent earnings call:

There is cannibalization, clearly, of the Mac by the iPad, but we continue to believe that there's much more cannibalization of Windows PCs by the iPad – and there's much more left to cannibalize.