FreedomPop's gamble on free WiMAX data launched in beta at the start of month, but early adopters had to be contented with conventional hotspots and modems at first; those of us with a fixation on data-only cellular handsets had to keep waiting. We can stay slightly cooler-headed now that the provider is shipping its iPod touch 4G Sleeve. Shelling out $99 grafts a 4G hotspot to the back of the
