MUSLIM LINKS
This website is associated with a group called the "Submitters." They reject the hadith literature and mention the work of Rashid Khalifa (who claimed to be a new messenger from God, and unfortunately, was stabbed and killed for making this claim). I like their stuff, but due to their rejection of the hadith and connection to Rashid Khalifa, mainstream Muslims may find them controversial.
Islam In Nigeria [Part I]: A History (Muslim Matters)
Facebook group for Pakistani youth.