Riddles

What has one eye but cannot see?

MT_TF_S. What letters are missing? Why?

I am brown and sticky. What am I?

I'm where yesterday follows today and tomorrow is in the middle. What am I?

I am easy to waste and unstoppable. What am I?

I am a delicious way of representing data. What am I?

When you do not know what I am, then I am something. But when you know what I am, then I am no longer it. What am I?

Forwards I am heavy. Backwards I'm not. What am I?

I do not speak, but there are no words I cannot make. What am I?

What day, within a week of today, does not end in Y?