The death of Yahoo Site Explorer has even inspired a eulogy over at SEOMoz by Michael King, to say nothing of write-ups at Search Engine Watch and Search Engine Land, among other places. The tool was born in September 2005. What is it about the closing down of a five-year-old tool that brings on nostalgia in SEOs? Quite a bit, when the tool was YSE. Many SEOs started their career with this tool. It was free, after all, and at the time it came out, users couldn’t get the kind of information it offered without paying through the nose. Not only did YSE give you complete information on your own …