The Google-sleuths at Google Operating System broke the news this afternoon that mobile startup Zingku has been acquired by Google. Zingku provides all kinds of content sharing and alert services for mobile users. The company appears to have been founded 2 years ago in Middlesex, Massachusetts and never left private beta.
Based in part on the language used by Google in confirming the deal, that they have "acquired certain assets and technology of Zingku" I'd guess that the service will likely be absorbed to provide new mobile functionality across a number of other Google Applications.
If a new layer of SMS alerts, polls and sharing features start appearing in Google Docs, Grand Central and elsewhere in the coming months - that will probably be the result of Zingku dissipation across the sprawling Google properties.