Wedged right in the middle of the policy battles — literally — is Popvox. The local start-up serves as a digital intermediary between members of Congress and their constituents with a Web site and iPad app where each can read proposed legislation and voice their opinion.

“Regardless of whether you are a supporter or opposer, it was interesting to see that level of constituent activism,” co-founder Rachna Choudhry said of the Internet piracy debate. But it’s not the only issue garnering attention.

“Every week there is a hot bill,” she said.