I multi-task and sometimes I have 6 or 7 Internet browser windows open to surf different sites (so I don't waste time waiting for the pages to load). But lately I have had an increasing number of Swagbucks searches requiring me to enter the 3-letter code before the Swagbucks are awarded. So if I had flipped to a different browser window and didn't come back quick enough, I would get an error saying that the Swagbucks had not been awarded and were no longer available. It's really annoying. I probably have lost about 20 Swagbucks this way just in the last week.
On top of that, my toolbar is not working, and I haven't been getting the bonus codes on time. Like, instead of getting a new message when the code is issued, I would get nothing and then 3 weeks later, I get 6 expired bonus codes.
I also participated in some Trusted Surveys and never got the credit for completed surveys. Or I would complete the "Offers" and never got the credit. I could have cashed out a long time ago if all these worked!