Download image.

http://android-developers.blogspot.com/2010/07/multithreading-for-performance.html
http://www.anddev.org/novice-tutorials-f8/imageview-with-loading-spinner-t49439.html
http://en.androidwiki.com/wiki/Loading_images_from_a_remote_server
http://stackoverflow.com/questions/541966/android-how-do-i-do-a-lazy-load-of-images-in-listview
http://www.higherpass.com/Android/Tutorials/Working-With-Images-In-Android/3/
http://www.helloandroid.com/tutorials/how-download-fileimage-url-your-device
http://stackoverflow.com/questions/3657587/android-how-to-download-an-image-and-use-it-as-new-resource
http://coderzheaven.com/2011/07/how-to-download-an-image-in-android-programatically/

Link berkenaan dengan openfire

http://kurniawanadam.wordpress.com/2011/06/04/instalasi-chat-server-dengan-openfire-di-ubuntu-server-10-10-dan-penggunaan-pidgin-sebagai-aplikasi-di-klien/
http://secangkirkopipanas.wordpress.com/2008/07/20/aplikasi-java-untuk-instant-messaging-berbasis-jabberxmpp/
http://teknonesia.com/2011/06/instalasi-chat-server-dengan-open-fire-3/
http://community.igniterealtime.org/docs/DOC-1020