Kyle,
I applaud the concept of sharing ideas for entrepreneurs to tackle.
However, this list of ideas is dangerously bad, with nearly all of them suffering from either monetization challenges or huge execution issues. Anyone that sets out to solve these as-is will end up wasting a great deal of time, effort, and resources.
It's generally bad form to approach a startup idea from the perspective of "wouldn't it be great if XYZ existed?" Startup ideas aren't simply about identifying a problem to be solved - they are about identifying problems with achievable solutions that will make money. That's a lot harder to identify.
Having founders or investors speculate about "what would be cool" in a problem domain that they don't have much experience in is inevitably going to result in ideas that underestimate transactional costs or the shape of the problem itself.
A better approach might be to create a product similar to HN (or extension thereof), where users can post problems identified and/or solutions proposed, and discuss the issues thoroughly, as well as vote up problem/solution pairs that seem like good ideas.
This communal discussion should, with a broad enough user base, quickly sieve the problem/solution pairs that are feasible from the ones that are not.