Answer: -Anytime there is an inquiry regarding your credit report (apart from when you order your own), it lowers your credit score...but not significantly, so I wouldn't worry about it.What you want to concern yourself with is what the ratio of available credit is to debt...never ever use up all your limit!! -Raising credit limits, can always effect your credit, not always in a huge/bad way. it only gets bad when you rack to much onto them and dont pay them. i say if you dont need such a high limit, then dont bother raising it. -Having too much open credit is not good.My friends father has all these cards and he has between all of them 150,000 at his disposal and he applied for some sort of loan or something and they turned him down because he had too much "Debt potential."At a certain point it's not good- I have 4 cards with $20 grand worth of credit and I've got fine credit. -Have you ever thought about how many people in our country don't have a perfect credit score? You will surely be surprised to know that over 30 million Americans have a below average credit score. Boosting your credit rating takes some work. There is no quick fix to increasing your ratings. Repairing any damage takes time, but it also does not spell doom!So what is credit rating anyways? It is a number given to assess and reflect your creditworthiness. Your credit score will be a number valued from 300 to 850. While numerous factors can be attributed towards this rating, your payment and debt history are more important than others.To start with, you shall need a copy of your credit report. If everything in the reports is good, then you can be rest assured that you will have a good credit score. Getting your credit reports is easy and pain free. Actually you are permitted one free copy of your credit report, every year. In order to get your copy of the report, just contact anyone or all the three national consumer credit reporting agencies as given below:1. Equifax: 1-800-525-6285, www.equifax.com, P.O Box 740241, Atlanta, GA 30374-02412. Experian: 1-888-EXPERIAN (397-3742), www.experian.com, P.O Box 9532, Allen, TX 750133. TransUnion: 1-800-680-7289, www.transunion.com, Fraud Victim Assistance Division, P.O Box 6790, Fullerton, CA 92834-6790Get your free copy of your credit report by logging on to www.annualcreditreport.com or call them on 1-877-322-8228. Please note that www.annualcreditreport.com is the only website which is legally authorized by the credit rating program to provide you with your copy of credit report, free of cost.Equipped with the score, it is now easier for you to work towards improving it. The thumb rule for having a good credit score is to pay all your bills regularly. When you pay your bills on time, you increase your credit rating for future. This is for sure, the easiest and most simple way to boosting your credit scores! Read more from: http://www.credit-card-gallery.com/artic...