ALSO NOTED: Why pay so much for Skype?;Mobile technology at'tipping point' in Europe; and much more...

> Why eBay paid $4.1 billion for Skype. Column

> Mobile Technology has reached a "tipping point" in Europe, where two-thirds of companies plan on rolling out mobile email or other enterprise mobility applications. Article

> Alltel will exchange wireless properties in order to meet divestiture requirements. Article

> New microchip that mimics brain functions could lead to 100G storage capacity in handsets. Article

> Hewlett-Packard to introduce wireless television sets next year that connect to PCs and routers. Article

And Finally... Experts say cell phones contribute to hearing loss in young people. Article