CNET reports (and CTO John Saw explains on the company's blog) that Sprint has decided to taper access to a slice of its "unlimited" wireless data customers, by throttling access (not curtailing it, at least) to those who slurp down more than 23 gigabytes per month -- the same cap that T-Mobile has imposed. If you think "throttled" and "unlimited" don't quite jibe to describe the same service, you're not the only one to quibble: CNET notes that regulators have "begun scrutinizing the carriers' practice [of slowing access past a cap]. In June, the Federal Communications Commission threatened to fine AT&T $100 million for deceiving its customers by mislabeling its service as unlimited. The FCC also challenged Verizon when the company planned to expand its data throttling policy to its 4G customers. The company retracted that policy last fall. In June, Verizon also stopped slowing unlimited-data traffic for 3G customers."