We need to keep in mind that the SHACs of old were targeted to a different audience than the one last night, or future SHACs. With the PR of the SHAC, new eyes were watching, not just people from a couple of message boards.
Imagine if this was the very first SHAC you had watched and you were thinking of investing (not trading) FUSZ. I wouldn't be surprised if there was a jump in sp Friday and the next few days due to new investors that watched the SHAC.