How can I change thumbnails in Opera's speed dial?
Solution 1:
You can configure which thumbnail your speed dials and bookmarks use via the heart menu.
Solution 2:
Go to http://www.symbaloo.com and create your own set of thumbnails.
Install an Opera extension called "Custom Home Page" or "Homepage in New Tab" or "New Start Page Pro", and copy the address of your Symbaloo mix into the extension.
Start enjoying your new customizable Opera speed dial.