I have no idea why, but it would be good if the README reflected that e.g. Factory Girl cannot interact with the database used by the @selenium tag-fired selenium instance.
Anyway, now it works, and thank you for a great library. I hope someone else can save this time I spent literally wading through forums ;-)
Actually... it does.
On second thought, that documentation could definitely be improved.
Rewrite section on databases and transactions, closes #494