Now comes the research portion of your software project.

If you have not yet registered with the site (or sites), you can do that now.

Then, go through the "top sellers", or "hot buys" list for each site.

 Visit the product page for each item and note down (Excel or are text file are both fine) the following:

• Name of product
• General category (e.g. Helpdesk, advertising, security)
• Any questions and features that are often mentioned.

Once you have done at least 20, go back over them and pick a general category you want to create a product for.

Go back through those products and note down all you can find out about the features they have, and those that are asked for.

You will use this to plan out your list of requirements before you create your product.

Note that while this shortcut gets you lined up on a product that people want, you are unlikely to end up on the top sellers list yourself unless you do a really good job.  Many of the products you find there will have been around for several years.  This is a quick way to get a product done and selling so you can use the revenue for other things.