Microsoft announced that its Office Web Apps for Windows Live SkyDrive and Hotmail are now available n 18 new countries in Central and South America, including Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Uruguay, and Venezuela.

“In the nine months since they launched, Office Web Apps are now accessible worldwide in more than 190 countries,” a representative for Microsoft tells WebProNews. “More than 30 million people are using Web Apps to view, edit, and share Office documents from anywhere with a browser and an internet connection.”

With the apps, you can do things like:

– Embed an Excel spreadsheet
– embed a PowerPoint presentation
– View Word documents in app on smartphones

“Out of approximately 2 billion internet users worldwide, there are roughly 750 million Office users,” says Jevon Fark of Microsoft’s Office Team. “To us, this delta represents tremendous opportunity for 1) offering our 750 million (and growing) customers the best online companion to Office; and 2) offering people from all walks of the life the ability to view, edit, and share Office documents from anywhere with a browser and an internet connection. This includes viewing, editing, and sharing Office document attachments in Hotmail.”

Microsoft has 360 million people using Hotmail. Users of Sky Drive, Microsoft’s cloud storage product, can also use the apps even if they don’t use Hotmail.

A couple weeks ago, Hotmail users worldwide got Facebook Chat integration.