There’s a way to boost your credit score that doesn’t involve paying down debt or any of the other more traditional score boosting tactics. Since credit scores are determined, in part, on the difference between your credit limit and the amount of credit you use, ask for a higher credit limit. Your chances of increasing it are likely better than you think. Of those who apply for a higher credit limit, 8 out of 10 are approved, according to a recent Bankrate Money Pulse Survey. While it helps to be over 30, odds are good for all adults. To avoid having your credit diminished by asking for a higher limit, ask for the highest credit line increase that won't trigger what's called a hard inquiry. (See also: Credit Score: Hard vs. Soft Inquiry.)

It should go without saying, but, another quick tip for fast credit repair is through focusing on eliminating outstanding debt. Furthermore, if you have outstanding debt, the idea of opening new credit lines should go out the window. It’s more important, as a responsible borrower, to handle the financial matters at hand and eliminate any outstanding debt first. Through taking the time to do this, you can significantly improve your credit score and likelihood of getting approved or credit increases, all of which can help with credit utilization, enhancing your efforts of fast credit repair!
I would disagree with this option, as a credit analyst its my job to investigate credit and determine customer eligibility for loans etc... typically creditors do not look for a card thats been used 1 time for $15 then never used again this kind of credit is disregarded and or not taken seriously. When we look to approve a consumer we look at several factors and what that makes a large impact is how they make their payments, the balance currently on all their revolving and installments and the history of payments. if you only charge a tiny amount and pay it off its going to show no history and therefore not be a heavy influence. in fact if you can handle it it is good to sometimes charge the card near max but then pay it off super fast. yes this well temp drop score however. it will show creditor your applying for that you can handle larger amounts and that you pay them down good and fast. 
Write a letter to the specific credit reporting agency that shows the falsehood, whether it is Experian, Equifax, or TransUnion. Explain the mistake and include a copy of the highlighted report along with your documentation. Although certain bureaus now let you submit disputes online, it’s not a bad idea to send this letter by certified mail, and keep a copy for yourself. The reporting agency has 30 days from the receipt of your letter to respond. The Federal Trade Commission provides advice on contacting the credit bureaus about discrepancies. Here are the contact numbers and web sites for the three credit bureaus:
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