If you are having your product developed by a freelance developer or a development company, the one thing to keep in mind is that you have to remain true to your idea and your vision of your product. Anything is possible… this means, given a clear vision, anything can be coded and built, and don’t let any developer tell you its not “doable”. Limitations are built only by lack of knowledge/expertise to certain areas. Some of the products developed by 365labs include TwitWall, XLTweet, FAQLog, and others that my clients own.