As said by someone, The first impression is the best impression. From the user's perspective, we cannot deny the fact that the product will be more used if it is easy to use and well presented. If the instructions to the user are unclear or complicated, the user tries to avoid using it. If I want to buy a book about J2EE from the bookshop, what will be the first thing which will be visible to me? It is the cover. If the cover is attractive, I will go and at least check out what the content inside is. That will not happen if a book has an average cover and simple presentation. Everyone will obviously check for the quality of the content and the usefulness but that's once we take the book in hand. So to force someone to at least to have a look at it, the most important thing is the presentation!! So we as developers need to make sure that the web page is attractive.
If the page is very well designed with a good color scheme, nice font, use of images as per the theme, clear instruction...