What does it mean and need whether we are uploading our app into the market? Please Explain or give me a related links.
In market client on phones at least featured apps with high ratings get to display the promotional graphic.
This is the one that shows up on top even before you start searching the market for a specific app.
answer from Android market forum.
Edited: One of the google employee gives some clarifications
Update: Both links above are now broken but the detailed information can be found here
Selected applications have the ability to be featured atop their respective categories. This is not a guaranteed feature, but uploading promotional graphics is something that we recommend.