Does anyone remember the old Kartoo graphical/relational search engine? (Not its current hijacked reincarnation at kartoo.com) It was not very practical as a g

Does anyone remember the old Kartoo graphical/relational search engine? (Not its current hijacked reincarnation at kartoo.com) It was not very practical as a generic search engine, but I found some very interesting links following the maps of related terms. I thought that kind of intuitive user interface would be improved and become popular, but they never did.