Twitter. Surely by now you've heard of it even if you're not sure what it is. Don't feel bad about it. "What is Twitter?" was one of the most asked questions at Ask.com in the past year. It seems as if you'd better find an answer soon though. While I've been a Twitter user for more than a year now, I still search for a good reason to tell my Indianapolis computer consulting customers that they should use it.

According to a recent survey conducted by cScape, almost 44 percent of companies plan to increase their spending on Twitter activities in 2010. It seems they believe this is the best online medium for engaging customers. I say "they" because I'm still a skeptic about the successful use of Twitter. While estimates of the number of users range as high as 80 million, more than half of all users never come back after the first 30 days -- many never return after initially creating their account. In addition, the company doesn't yet know how it will generate revenue from its user base. If someone doesn't figure out a killer business use for Twitter soon, the whole thing may come tumbling down.

Nonetheless, I keep up with my account and tweet every couple of days to my 60 or so followers. Some of my computer network services customers have created accounts, but they keep asking me what they should do with them. And I just can't give them a good answer. So, if nearly half of all businesses invest in Twitter activities in 2010, the other half may have an advantage in marketing.