BTW, what bonus does the computer monitor give? It's the first decoration I got and it shows random images from the gallery while the CEO faps away. I'm at level 3, which gives +300 prestige and I can see that there's some kind of upgrade at levels 4 and 6, but when I hover the mouse over any part of that, I just get an empty tooltip.

I haven't seen or noticed any bonus other than the prestige and it's the most expensive to upgrade.