What kind of business? Regardless, the best way to get some serious reputation is by making your customers happy and coming back. There is nothing like a super happy customer and the word of mouth.
First you didn’t mention that what business you are doing or representing on your website. As a general for good reputation of your website there must be very cool and professional looking website as well as the main key is content your website content must be healthy and good it will work.
I believe he might cause of not enough post and not allow to post link in the forum . To create a good reputation , make sure your site do have some testimonial, show some client base , case study and report , show direct what they want to look for . This able to get good reputation on your website.
I think you are asking about your website's reputation in user point of view. So, for this you should develop a good looking website, with great images/flash. Your website's color combination and navigation is also a big factor for this. You should create a sitemap of your website for a user friendly website.
You need to be an authority on whatever it is that you are marketing. Your customers must know that you are offering products that you feel are good and worthy for others to benefit from. A blog is essential for your online reputation as well as a website. Two or three blog posts a week will gain you a good reputable place in cyberspace.
Building online presence definitely needs some time, instead of just overnight. This just depends on you actually as well as the type of business you’re into. This requires hard work and dedication to face potential problems.