Spacer

Spacer allows You to just add an empty tile on Your Speed Dial page. This helps You prevent the situation when after removing some tile, all other tiles mess up. You can customize the tile's background by selecting from transparent (not supported yet by Opera) or solid colour. You can install as many Spacers as You want at the same time - just place them wherever You want on Your Speed Dial page. If You don't need spacer, just removes it in usual way (by clicking "x" on it in Speed Dial or uninstall Spacer extension via Extension Manager).