I just release an app on the Android Market, and naturally it was displayed under the "Just In" category. From this I was able to get 100+ downloads on the first day with a couple of good ratings, but since then the downloads have dwindled (<100 over the past 3 days) as I am no longer listed up top. I am not too concerned as the app is free and I am just doing this as a personal project, but it has made me curious how other app developers approach the marketing side. This is something that I have never really thought about in the past as I have always been on the technical side in my day job. Does anyone have any first-hand experience they can share?