[sgehlich]

Okay, good point on getting the clipboard data. But what about setting it? I don't see a big security concern there.

Also, what if the user has to give permission to read the clipboard per default, but he can also check 'Always allow for this tab'?

[yogo]

No thanks. I definitely don't want a site to have the ability to set my clipboard. It will be much easier to help spread malicious links (visiting a site using paste and go). Plus what about the annoyance of having something in your clipboard that you were going to paste somewhere then due to visiting another site it gets wiped?