Android Market application Url?

Bryan's market URL will work, but I prefer:

market://details?id=com.example.your.package

since it will take you directly to the details page.

For phones:

market://search?q=pname:[name of your package here]

For example:

market://search?q=pname:net.mandaria.tippytipper

For non-phones: You'll need to link to an Android Market aggregator such as appbrain:

http://www.appbrain.com/app/net.mandaria.tippytipper