Toronto-based Casero, a maker of white label Web 2.0 platforms, has raised a $5.8 million second round from existing investors Argo Global Capital Partners, Highland Capital Partners, the company’s founders and new investor Rembrandt Venture Partners. Some details of the round were originally announced in May (release). This bring the company’s total amount raised to $13.3 million, having raised $7.5 million in 2004. Offerings include the Casero Digital Media Suite, which lets users upload and manage their collections of digital media, and a social networking suite. A number of companies are doing white label services such as these, although Casero is specifically targeting broadband operators. Customers include Bell Canada and BT. Release.