I am not an active participant on the hackernews community. They have a Show HN tag where users can post their hacks and get voted on.
The problem is that it is rigged against newbies, so unless you have spent sufficient amount of time on Hacker News you cannot even post a link. Also, it is mainly geared towards interesting tech news, so if there are a lot of interesting discussions going on your story will get sidestepped.
I feel a connection with Stack Overflow and I know any question I ask will be getting decent number of well thought out answers.
I would like to show my pet projects and get instant feedback, it would also motivate me to develop more projects. Not only this, I will also have the opportunity to see what all cool things other members of the Stack Overflow community are developing in their spare time.
What's the deal with the down votes. I only asked for a feature request relating to stackoverflow.