If I understand correctly, a third party can find properties for which taxes are owed, and on which liens have been placed by e.g. school district, city or county. Do I understand that if that third party pays the taxes, it's possible that the third party can gain title? Has anyone had experience with this kind of investing? I understand the possibility of other liens that take precedence, e.g. IRS tax liens. How does one address this issue, and what other pitfalls are there? How different is this from buying a foreclosure? Thanks.