Question Author
I checked 'Threads I'm involved in' and my questions are all there. Also someone else's 'azed 1819' question is there if I search for it via Google, but not there if I use this site's search.
In other words, search is not finding questions that are there. Checking whether someone else has asked a question before asking myself thus becomes impossible unless Google is used.
Please don't think that I don't value your suggestions, they are appreciated.