I used pepipoo sometime ago and was grateful for the help I had, and I'm not sure why it vanished. There is quite a lot of comment here about how sad people are that the very useful information on it also vanished. However, it has not vanished. There is an internet resource called the wayback machine on web.archive.org. This is a system that takes snapshots of websites at intervals over time, and I have done a bit of research. Pepipoo is indeed indexed, and has numerous (Over 150,000 - that's huge) hits. Some will be more useful than others, of course, but I suspect that an enormous amount of information is retrievable. Unfortunately, the wayback machine is not fast, so patience will be required, but some news is good news, I hope.