Business Idea: Goal Post

I have a backlog of business ideas that is 4 pages long. I have decided this maybe a good place to post these ideas. I encourage feedback, assistance if I do a feasibility analysis prior to launching on of these ideas, or if you like an idea go a head and run with it yourself. I would just appreciate it if you let me know if you choose to execute one of my ideas into a profitable business. I won't ask for equity. I'd just like the satisfaction of knowing one of my ideas was profitable.

So here is an idea:

GOAL POST
Several years ago I thought of creating a web application and widget that would allow users to create and post their goals on the web. Then users would provide updates on how they are doing. Other users (personal contacts or other goal minded people) can follow up with you, compete with you, join in your goal, or anything else ... The widget would show your current goal(s) and chart your success. Overtime, you can gain higher status from none-action to doer. One hurdle would be the integrity of the goals because it is all user generated and recorded. If a person were to falsify goal achievement it would be misleading. Users can also share tips with other that may help them achieve their goals. This could act as a benchmarking tool to share best practices and would provide encouragement to others that are working on similar goals showing that what the user has set out to achieve has been done my X number of people.

Revenue model would mainly be advertising revenue. Advertisers trying to sell to specific demographics working on business, sports, school, personal, spiritual, financial, or other goals.

The websites success would be largely dependent on growing a large user base (as it is a positive network externality), developing channel partnerships, and an easy to use site layout.

What do you think?