Riddles

1. The first person made me but did not use me. The second person bought me and sold me. The third person used me but never saw me. What am I?

2. The faster you run, the harder I am to catch. What am I?

3. A mouth and sometimes a fork, sometimes I am fed but I never eat. What am I?

4. A cowboy rode into town on Friday, stayed three days, and rode out again on Friday. How did he do it?

The answers are posted as a comment.