I have been working on mine and Ian's family tree for over a year now - its been an amazing and frustrating process but enjoyable none the less.
I have had to restrict my looking to just major ancestors as otherwise it would be huge with all the children of people but even with that I have nearly a 1000 people between the two families. It's been a steep learning curve and a lot of family tree madness to sort out - 6 generations of Bob Sheader with brothers called Walter doesn't help matters, neither does census people have spelling issues...
I would recommend it to everyone :)
and if you are lucky, there will be other relatives on there who have photographs and information they are willing to share - like this awesome wedding photograph of Ian's Great Grandparents in 1913.
and just sharing us rocking in our sunglasses :)