Lisbon Treaty and slavery?

Pathetic piece by Lib Dem Voice today, asking if those calling for a third "decider" referendum (generally as a joke) would have ever allowed slavery to be abolished, and asks if it should take 4 election wins for Cameron to gain power.

It's generally illogical - Farage (who the article attacks) was against a second referendum. Surely those of us who opposed a second referendum are the ones who would have abolished slavery, as this article goes? What was the Lib Dem's position on the second referendum?

This sort of rubbish brings the blogosphere down.