Dandywell,
First off, you don't necessarily know as much as you might on the subject. For example, several "claimants" who have come here are well known to most researchers on the subject, like Bob, Greg, Penny, and Peter. Alot of that road has been gone down before and the claimants TO A ONE all come up bogus.
There is nothing wrong to DEMAND a "claimant" provide solid evidence, not just a story that Grandpa in Italy was really the surviving Alexei who married his sister Anastasia secretly and had kiddies.
For a while, one of the first such "claimants" said the IF had been rescued by SPACE ALIENS who transported them to modern day...should THAT have been given serious discussion? Another claimed that GD Michael A. survived and MARRIED his niece Olga N. who also "survived" and they had kiddies together...yet he refused to provide genuine proof of that claim...
IF we "took the time" to listen to the constant ramblings of "claimants" without proof, there would be hundreds of pages of that junk, which would distract for the point of this forum, which is VALID historical discussion of the history, events, people and most importantly EVIDENCE.