Paul Han has been building websites since 2007, when he co-founded allkpop as a K-pop news blog. It became one of the largest English-language K-pop sites in the world. He sold his stake and left in 2025. He now runs 7H Ventures, mostly a holding company for a set of data sites he builds with a small team. ScratchCheck covers U.S. lottery: scratch-off odds, and the best scratch-off games across the United States. RentDataNow tracks rental markets. CensusEasy turns Census tables into plain English. AllK12 handles school and test-score data. PinScene is a live community map. ClaudeFolio is the newest and is focused on AI and its effects. Paul talks about lottery and gambling math, rent and housing trends, census data, school data, and is available for interviews for quotes.