I recently came across a blog post from Fred Wilson over at Union Square Ventures, found here, talking about the fact that online advertising actually underestimates the ROI of the campaign because there is almost always a positive, but unmeasurable, impact of online advertising on off-line sales. Fred is curious if there is a company that can create a closed-loop technology and tracking solution to help quantify that missing ROI link between online advertising and the real ROI. Ironically, that’s exactly what OnCard is doing. He just needs to check out our website at www.oncardmarketing.com to see that this is a problem we’ve been tackling for months. We’d be happy to talk with him (and anybody else who is interested) about our solution and why we think it is invaluable to our advertising clients.