Your problem reminds me of this story: A little boy sat on a stump, contemplating a chunk of wood in his hand. "What are you going to do with that?" h

Your problem reminds me of this story: A little boy sat on a stump, contemplating a chunk of wood in his hand. "What are you going to do with that?" his father asked. "I'm going to carve an elephant," the boy said, confidently. "Do you know how to go about carving an elephant?" "Easy," the boy replied. "All I have to do is cut away everything that does not look like an elephant." Figure out what really needs to be on your home page. Don't put everything on there. In fact, remove as much as you can. Merge the two brief explanations (what web app is + what it does). Put the links to FB/Twitter in bottom or top bar so that they do not detract from the main contents. Primarily, add a "Get Started" button or some other action cue. If at all possible, include a short video that shows how to use your app. I wouldn't bother with newsfeeds etc. unless it is core to the app's functionality.