At a panel on technology hosted by TIME today as part of its TIME 100 Roundable series, TechCrunch founder and editor (and past TIME 100 honoree) Michael Arrington said one of the technology trends that scares him the most these days is the amount of personal information that's being collected about people by private corporations.

Arrington: I'm worried about privacy issues. The companies out there gathering data on the stuff we do on Twitter, publicly scraping the stuff on Facebook, it's amazing how much data [they're collecting]. I'm worried it can be abused.... There are companies out there whose whole business is to gather as much information as possible, who our friends are, what we do....

Josh Quittner, TIME editor-at-large and panel moderator: So you'd like regulation around that?

Arrington: I like the way Europe does things, where the human being comes first, and they're very careful about how you store data.

The panel featured (from left) recent TIME 100 honorees Digg CEO Jay Adelson; Arrington; Philip Rosedale, creator of Second Life; and Jeff Han, chief scientist and founder of Perceptive Pixel (and creator of the CNN Magic Wall). Quittner is at right.

Video of the panel will be posted to TIME.com.