Warlocks, which spells do you never use?

Feel free to explain why or just list the spells. Typical explanations might be something like "The damage isn't competitive" or "I can't afford the talent points."

For purposes of this thread, please confine your discussion to this specific question and don't belabor the point with other class issues.

Update:

Don't over-analyze "never." One player phrased it as "spells I should be using, but am not." That is more of what I was going for. I knew this thread would be long so I wanted to give it more focus than just having players go on for paragraphs on what the warlock class means to them or how they would redesign it.

I am surprised by how many players are referencing spell mechanics that have changed (e.g. stones, Infernal). I can understand if they have been useless for so long that you gave up on them, but really if you are passionate enough to have strong enough opinions on your class to post, you owe it to yourself to do a little research. It just makes it hard for us to know whether you are refering to a LK or BC (or older) mechanic with your feedback.

I am also amused by those cynics who are offended that they are being asked their opinion. We have our own plans for the warlock, but we like to make informed decisions and seeing what players think is always useful information to have.

But on a positive note, many of these posts are very easy to read and comprehend, for which I thank you.