This Is My Jam has launched an official Spotify app, making it the latest music discovery service to get its own presence within the streaming music service’s desktop client. In this case, you can log in, see the songs that people you follow have been posting as their jams, and post your own. Well, sort of. Strangely, to actually post a jam, you’re kicked back out to the This Is My Jam website, rather than – as in the case of ShareMyPlaylists – being able to simply drag and drop a song into the application.