The classic trick to spurring early adoption of a data hotspot service is to share it with others, and NetZero has every intention of being as giving as its precursors. Its new Data Share program lets those who own of the company's WiMAX devices give away up to 1GB of data every month through Facebook, spread across five friends at 200MB each. Apart from needing NetZero hardware in a coverage area, there's no financial strings attached -- neither the sender nor the recipient needs to adopt more than the free, 200MB per month they already have just for showing