I don't think they're "great new technologies" so much as "pie in the sky" goal-spread diversification that shareholders like to see. There is a cultural aspect of the stock market where a range of goals is seen as more stable than, you know, getting real good at search and ads.
I suspect this in Facebook-OVR. FB might ruin it, a la Yahoo-Flickr, or leave them alone, but Facebook isn't really making headlines these days, and OVR is, so now every OVR story will now have to mention Facebook. It may not turn out this way, but there's no reason why the pairing has to be tightly coupled.
I actually had the opposite impression of stock investors, that they vastly preferred the "just getting better at what you do" than "pie-in-the-sky", but that's just an impression.
Tightly-coupled Facebook-OVR would shock me, definitely.
I suspect this in Facebook-OVR. FB might ruin it, a la Yahoo-Flickr, or leave them alone, but Facebook isn't really making headlines these days, and OVR is, so now every OVR story will now have to mention Facebook. It may not turn out this way, but there's no reason why the pairing has to be tightly coupled.