If you want to have a good laugh and simultaneously lose your faith in humanity, the comments from places like The Sun, The Daily Fail, and The Telegraph will not disappoint.
The kind of comments I especially love are the ones who whine about political correctness, yet use their own version of it by demanding that the Doctor only be played by a white male.
She wasn't my first choice for a female Doctor, but I think she'll do a very good job.