I have been to them, but not specifically for technology. I was on a mailing list called Q-Insights and it was good money during college. Basically you do a scr

I have been to them, but not specifically for technology. I was on a mailing list called Q-Insights and it was good money during college. Basically you do a screening survey online first to see if you match the criteria (age, marital status, ownership of a competing product, etc). Then if you qualify, there is a time and date for an in person focus group where they show a product or video and ask you questions about it. Usually there is food and then afterward they hand you a check. I have done these for movie previews, kitchen appliances, cell phone case, cars, and a few others.