After Comcast had put a cap on broadband access through its cable system, AT&T is following suit with its DSL line. The firm has filed a notice with the FCC and the limit will be tested in Reno, NV first. According to Digital Trends, the limit will be on a sliding scale basis with its slowest broadband customers given a 20 GB cap while the 10 Mbps customers will be given 150 GB of data a month. Here’s to more bars and less data in more places for AT&T.