This is adware or spyware. I believe it comes from iBryte but I haven't confirmed that. I just worked on a machine that had that problem. I have a antivirus scan running now so I don't know if it's fixed yet. I uninstalled several programs and stopped several processes that I think were related. This one is new to me so I don't know much about it. I uninstalled anything from iBryte as well as a program called iToast or something similar. I had to manually stop a couple processes with iBryte in their names, and I believe one for iToast. They didn't seem to come back after a reboot so I fired up a Sophos scan and I'm waiting for that to finish.