I am developing a facebook application that helps people achieve their goals (http://apps.facebook.com/dogether)

I knew there were two competitors: http://www.43things.com and http://www.goaltribe.com which is actually a good thing, it shows there is a need for this kind of application.

But today GoalTribe launched a facebook application that is very similar to my facebook application: http://apps.facebook.com/goaltribefitness

What do you suggest me to do?

1. Keep improving my application until I reach a better market fit than goaltribe? 2. Contact GoalTribe and find a partnership 3. Stop the project, the space is too crowded 4. Use some analytical method to decide 5. ??

As you can imagine, it is always a bit hard to discover a new competitor when you put some effort in your idea.

Thank you for your help.