BOSTON -- Fifty million times a day, someone Googles someone else's name, Boston television station WCVB reported. A new technology can help people figure out who is searching for them.

Video: Who's Googling You?

The station said the technology raises privacy concerns for people who think those searches should be anonymous.

One user, Elizabeth Yekhtikian, said she gets an e-mail from Ziggs.com at least once a day alerting her that she's been Googled. Ziggs, a community network site, is an upscale Facebook for professionals. Members use visitor tracking to figure out when personal contacts or clients are Googling them.

"I can check on the site and it shows me with little maps where the searches are coming from, and from exactly which town, within which state or part of the country or the world," said Yekhtikian. "That's kind of cool."

The technology can also help consumers track down people they want to avoid. Katie May joined a site called Naymz.com. Through its visitor tracking service, she figured out that an old boyfriend had been Googling her and sending inappropriate emails.

"He works for a university, and all those searches were coming from that university," said May.

Ziggs CEO Tim DeMello calls the technology "caller ID for the Internet." When someone clicks on the Ziggs profile, the member receives an alert.

"Every computer has a Web browser that has an IP address, which basically gives you a location," said DeMello. "It gives you the ability to time stamp it. So if someone goes to Google and they are in San Diego, we clearly know the time they went on and the time it came into us. We know what browser it came from."

DeMello insisted that the company would never reveal the actual name of the person.

"We think that it is a real privacy issue," said DeMello. "We need to make sure we always think about it."

But security experts say it wouldn't be hard to take that next step and get the name and address.

"Right now, with separate pieces of information, you can tie all of that together," said Leslie Reis of the John Marshall Law School. "You can identify somebody right down to either a location or a particular identity."

Experts said that protecting privacy on the Internet means working harder than ever to be careful of what you reveal online. But Paul Parisi, a privacy expert who runs a company called DNSstuff, said the only way to totally protect yourself is not to log on at all.

"All the data is there. Someone just has to put it together," Parisi said. "I think it's an interesting conundrum we are going to face over the next few years as our actions online are tracked and available for others to watch."