My last uncle died in November, aged 99. Many years ago he compiled a massive family tree, beginning with an ancestor who was born in 1720. I copied it into an obscure database and then forgot about it. Now I have managed to re-export it as a 50kb indented list, but there will be quite a bit of work before I can get it into a format that I can share with the rest of the family for the next 300 years.
I'm thinking of keeping things simple and making it available as a Google doc so that others can view, print and update it.
Any problems I should know about?