I have seen a number of questions about improving or checking your credit score / history. I think a Wiki would be a good idea to deal with these questions. My feeling is there that you shouldn't worry about credit score, but about staying out of debt. The score will take care of itself.
Correct me if I'm wrong, but there are three useful loans you can obtain:
- Student loan - Investing in your future (How much should be the maximum?)
- Mortgage - Most people don't have the money to buy a house and it's tax deductible.
- Business - Investing in your future. Risky business, and don't mortgage your house if you can avoid it.
All other possible debts should be avoided, especially credit card debt.
So, why do people fuss about credit score?
Edit
The credit score is a useful tool for companies, no doubt about it. This is a question about why people spend time and effort at getting a better score.