I have I think 70 tabs open right now. 10 tabs across, 3 rows visible, plus scroll bar.

It's not about multitasking. I open every link in a new tab and generally close the tab once I've consumed that tab. For example, I opened both this article and the comments in new tabs at the same time.

Generally I close down most tabs at the end of the day.

I'm sure this redesign will again mess up my workflow.