I know this is in answer to an 'old' post and I'm sure there are many others out there but AAGGHH! the things people put on their trees!
I have just rejoined Ancestry for a while as I am tracking a friends family for them and I did a search on my family.
I found a number of trees with completely incorrect info on them on this particular family all of which could be verified easily elsewhere on the web. Just to look at a few :
A great great aunt - born and died in Australia was according to this site born in Alsace in France and died there, or born there and died in Whittendon, Germany! She died in Whitlam Street, Parkside, South Australia! It's like Chinese Whispers!
Then my great great grandfather married my great great granny in the USA! Well he came from Germany and she from Ireland but NOT via the USA. They were married in Mt Barker, South Australia and she as a Catholic marrying into a very strict Lutheran family caused all sorts of issues.
Their son is seems didn't marry Jane, no he married someone called Ida Minnie in the USA. Poor old Aunt Jane. There did seem to be a bit of disturbance around their grave when I visited it the other day - bet she didn't even know he's skived off to the US with Ida

I've sent those concerned emails but suspect I will either be ignored as I have in the past or abused -

It is a worry though that people ignore the golden rule of genealogy and don't check their information. I'm by no means blameless but I do try and it's frustrating to see so many myths out there when with very little trouble they could be dispelled.
Oh well, that's my rant for the day!
Deanne