4 ms·YC was founded in 2005, so if you do the math...by covercash 13y agoYC was founded in 2005, so if you do the math...jedberg 13y agoHN came in March of 2007.jaredsohn 13y agoThat's probably when it officially launched. Some accounts are older than that, though (such as pg's account which was created in October 2006.)