Well, it must be acquisition day in the mobile arena. Following news that Nuance had purchased Swype, now comes word that Blackberry-maker RIM is paying $100 million for NewBay Software, reports All Things D.

NewBay is headquarted in Ireland, but the 8-year-old company established its North American presence in Seattle last October.

The deal is not the first for RIM in Seattle, which purchased contact management service Gist last year.

NewBay’s LifeCache software is used by companies such as T-Mobile, AT&T, U.S. Cellular, powering a cloud-based digital content offering used to photo albums, social networking services and calendars.

NewBay competes against Bellevue-based Motricity, which has fallen on tough times in recent months with disappointing financial results and a number of executive departures.

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