Please keep in mind that while you have slowly replaced your old bulbs with CFL electricity costs have doubled. Try to compare your KWatt usage this year (use a month where you do not use heat or A/C) with the one 12 months prior.

Reply to below post:

I have slowly but surely replaced a huge percentage of my bulbs with these little suckers and I'm going to be honest - my electric bill hasn't decreased. o

On the bright side, my house if filled with little glass containers that have mercury in them.

Seriously, I see someone says they save you money. Can you honestly say you've seen a difference in your bill?

I haven't.