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What: Shares of Responsys (Nasdaq: MKTG) have popped today by upwards of 10% after the company reported first-quarter earnings.

So what: Revenue increased by 26% to $38.1 million, while adjusted net income came out to $3.5 million, or $0.07 per share. CEO Dan Springer said the company's expansion into Latin America through its investment in Pmweb has expanded Responsys' footprint in the region.

Now what: Looking at guidance, second-quarter revenue is expected in the range of $38.5 million-$39.5 million, with adjusted earnings per share of $0.03. The company is also raising its full year 2012 guidance, from a previous sales range of $160 million-$163 million to a new expectation of $163 million-$165 million. Full-year earnings should come in between $0.21 and $0.23 per share.

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Fool contributor Evan Niu holds no position in any company mentioned. Click here to see his holdings and a short bio. The Motley Fool has a disclosure policy. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days.