I finally found a way to get rid of the annoying page-preview-popups in Google search results.
For FireFox users, add these filters to Adblock Plus:
google.com##.vspi
google.com##.vspib
google.com###vspb1) Click Tools -> Add Ons
2) Click Click on Adblock Plus then click the Options button. The Adblock Plus Preference panel will appear.
3) Click Add Filter, paste in one line, then hit return.
4) Repeat two more times for the other two lines.
5) Click OK.
From another frustrated user, on google.support.com.
Ah. much better.