Downloading 3rd party apps from the Installer can sometimes be a pain. Maybe your app is not available and you have to go searching on the internet to find the repository of that app. Personally, I hate that.
RepoName makes it easier to find the repository of iPhone applications. Just launch RepoName, enter the App name you want to download, and in seconds RepoName will generate the repository that app can be found in. This is much easier than searching on the Internet and saves you lots of time.
To download RepoName, just add this source: http://davteam.com/repo.xml