Tracx, the developer of a social data-mining tool, has raised $3.5 million in an extension of Series B financing. Flybridge Capital led the round, with early investors Revel Partners and Rutledge Capital participating. The round brings Tracx’s total capital raised to $9.5 million. The New York-based company is the creator of Social Leads, a tool for mining social media for sales opportunities. Tracx will use the funds for its worldwide launch of Social Leads, now in final beta.