I am using Ubuntu 14.04 on my chromebook. However I'm 100% sure the chromebook has nothing to do with it as the problem just started up a couple days ago some time after visiting elementary.io .
I have not installed Elementary on this laptop ever. However I did try to install their Pantheon DE to no avail earlier this week. I thought I properly removed the DE using:
sudo apt-get remove --purge elementary-desktop
sudo add-apt-repository --remove ppa:elementary-os/testing sudo add-apt-repository --remove ppa:elementary-os/daily sudo apt-get autoremove
However the website launches in google chrome when I first login into the desktop. Then it will spontaneously launch periodically as I'm using my laptop throughout the day. I have Firefox installed on the laptop as well and this never happens with Firefox. Google is also set to my homepage in chrome. So I know Elementary website didn't get mistakenly set as my homepage
Does anyone have any solutions as to what to do about this?