Here is a good essay on determining what is a good idea for a startup. Might give some guidance on what you should build:<p><a href="http://www.paulgraham.com/ideas.html" rel="nofollow">http://www.paulgraham.com/ideas.html</a>
read this great post: <a href="http://www.gobignetwork.com/wil/2007/1/5/forget-about-the-solution-focus-on-the-problem/10055/view.aspx" rel="nofollow">http://www.gobignetwork.com/wil/2007/1/5/forget-about-the-so...</a><p>
The smartest entrepreneurs aren't the ones who figure out the solutions to big problems, they are the ones who actually understand the value of those big problems. Smart entrepreneurs focus on the very essence of why the problem exists and the pain it causes. Then, when they find a solution that works, they know how valuable the solution really is.