There are six  attributes of a great Logo Design:

Is your logo design practical?
Can it be printed on different sizes without being blurry? Will it work in black and white format as well as in color? Some logo designs become really bad when reproduced in your advertisement in newspaper  or when sent through a fax machine as a fax designed fax cover. Try changing the logo size from big to small to check how it looks in different sizes. Blowing it up and reducing the logo to determine its readability at different sizes.

Has your logo designer created a distinctive logo for your business?
A logo design needs to be unique and effective keep in mind that  simplicity is key to a good logo. A design idea should not  be unique to the world, just distinctive enough so you can market your target audience.

Is it graphic?
When few people see your logo and asks you what does your logo mean you can simply understand that there is something wrong with your logo design concept. You shouldn't have to explain to people what message you are portraying in your business logo design. An effective business logo design will be self explanatory to communicate purely in graphic terms to the right brain portion and doesn't depend on verbal explanation.. This is equally true for all logo designs, whether an iconic logotype, a word mark or even a simple letter mark. The choice of fonts, shape and color should effectively explain the real  essence of the company.

Is the logo design appropriate to your business?
Is the logo design relevant to your business? Is it exactly consistent with the image and tone you wish to convey about your business? The content of the logo design has to be right! An otherwise great logo design will fail if the message expressed is different  with management intentions.

Is it simple?
Simplicity of  a design makes a logo easier for customers to remember and recognize the next time they will see your website. A great business logo design will contain only one graphic idea and the viewer will understand the concept behind in fraction of a second. So if you plan to use a special symbol for your company it should be accompanied with a clear company name. If it is a word mark, one idea or device should make it special -- like the stripes in IBM company logo . The more unique the name,the simpler the graphic design can be. Think crystal clear contrast and simple shapes, with limited colors and combinations.

Does it convey once uniform message?
Great business logo designs try to express no more than one attribute in it  and support a single aspect of positioning.

Get different opinions from your colleagues and from people in your target market instead of merely relying on your own taste and  intuitions. Also, use this checklist to avoid common problems with logos:

Is your design too trendy?
Think of the future and avoid being too trendy. A good logo may last in your customers mind for years and give your customers a chance to burn the image of your logo into their brains.

does your  logo design uses words or letters, are these words recognizable?
Your logo should speak by itself you should not be the one to explain it to people.

Does your logo arouse any un-wanted associations?
What you intended as stepping stones might be understood as  looking like animal droppings. If you get this kind of response , you need to pay attention.

Are the colors in your logo design appropriate?
Colors are very powerful. Different colors have different meanings and associations and can have predictable effects on your audience. Understanding color associations is imperative!

Do you and others in your company like the logo enough to use it enthusiastically?
If not you must return to the drawing board.