Demand Media reported $79.5 million in revenues in Q1, an increase of 48% over Q1 2010, when the company posted $53.6 million in revenues

Google is gearing up to map the world’s newest country, the Republic of South Sudan, which is expected to take shape later this year.

Group messaging application GroupMe acquired “personal relationship management” company Sensobi. Terms of the deal were not disclosed.

Helium, a self-publishing site that bills itself as a “citizen journalism” hub, has raised $10 million in debt financing according to a recently filed SEC form, bringing the company’s total raised to $27 million. The investors have not been disclosed and Helium was not immediately available for comment.

Location-based mobile media company JiWire raised $20 million in Series C funding.

Jumptap, provider of targeted mobile advertising, completed a $25 million financing round. Existing investors including AllianceBernstein, General Catalyst, Redpoint Ventures, Summerhill Ventures, Valhalla Partners and WPP, as well as several new investors, participated in the round.

Mashery, provider of API management tools and services, raised $11 million in funding led by OpenView Venture Partners. Existing investors Cisco, Formative Ventures, First Round Capital and .406 Ventures also participated in this funding round.

Ron Conway's SV Angel has raised $11.7 million for a planned $40 million new fund.

Today’s featured entrepreneur is Sizhao Yang, COO/co-founder of BetterWorks, Inc.