Try doing someone else's tree. Just after Remembrance Day a friend said he had an uncle who was in the navy and was killed in 1945 but didn't think that he was commemorated anywhere except on his parents' gravestone (which is in Findagrave). I said have you looked at the CWGC website? It turned out he is on the Fleet Air Arm memorial at Lee-on-Solent and also on a very small memorial with just seven names, near the farm where his family lived. Nobody had his full date of birth, which was waiting to be found in the 1939 register.
Then I linked all the Findagrave entries on two family graves. That led me to persue the family further, which was slightly tricky because they had lived on farms a few miles around the junction of Yorks, Notts and Derbys with one wife born in Lincs, so I was continually changing record sets and registration districts, but at least nobody disappeared to London. I presented my friend with the names and dates of all eight GtGtGrandparents on his maternal side.