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My site scores a D in YSlow. How important is it that I get it up to say a B or an A?

I feel the page already loads quickly. I tested it at home on a modest 512k connection and it loaded in an acceptable time and was quick to browse etc. But according to YSlow there's heaps of room for improvement?

Is it worth it?

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up vote 4 down vote accepted

I would say it depends on what type of site you are running. If it is a person site and you don't care about how many people are visiting it then I would say don't worry about it. If it is a business and you want to give people the best experience you can then I would say worry about it some. A D in YSlow is pretty low and you probably have some reasonably easy things that can be corrected with a little work. Even though it seems fast over a 512k connection there are all kinds of things that can make it seem faster for you than it is for a lot of others. Things like compression are easy to turn on and can help a lot. You should post your score and what type of web server you are using so that people can give more specific advice.

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Would if I could, I had this problem a few months ago and I've actually fixed all the issues now (up to a score of B). Sales went up by 30% when I did so I'm guessing it was worth it ;) –  Mark Henderson Jul 8 '10 at 23:54
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