Communications of the ACM

The Communications Web site, http://cacm.acm.org, features more than a dozen bloggers in the BLOG@CACM community. In each issue of Communications, we'll publish selected posts or excerpts.

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Math struggles with the usability of formal proofs.

Researchers consider how to adapt broadly available technology products for those battling physical impairments.

Is Google trying to trick you on the way to the polls?

Is universal access to the Internet a realistic method for addressing worldwide socioeconomic inequality?

What's in a name?

Whether global companies succeed or fail often depends on how effectively they develop and maintain cooperative relationships with other organizations and governments.

The proliferation of social media usage has not resulted in significant social change.

Retaining electronic privacy requires more political engagement.

Sometimes all you need is the right language.

How to lose friends and alienate coworkers.

Business dashboards that overuse or misuse colors cause cognitive overload for users who then take longer to make decisions.

Fusing information from multiple biometric traits enhances authentication in mobile devices.

Tracing the first four decades in the life of suffix trees, their many incarnations, and their applications.

Is it possible to design an online protocol for playing a lottery, in a completely decentralized way, that is, without relying on a trusted third party? Or can one construct a fully decentralized protocol for selling secret information, so that neither ...

Bitcoin is a purely online virtual currency, unbacked by either physical commodities or sovereign obligation; instead, it relies on a combination of cryptographic protection and a peer-to-peer protocol for witnessing settlements. Consequently, Bitcoin ...