Just an alert that I've encountered a successful tab hijack. In addition to alert messages when attempting to close a tab, suppressing those messages results in a tab that cannot be closed even without generating a pop up warning. The page attempts to launch a popup (which is blocked), but the tab does not respond. The only way to close the tab is to shut down chrome. A number of other functions seen to be blocked.
Check it out! Obviously be warned that this link is pure evil and will try to take over your browser, in addition to some fun dial-in computer assistance scamming.
[Mod edit: Made url non clickable for security reasons]