[saiwong]

I think she is "normal".

She didn't get much air-time in the first few weeks because there were
so many housemates and big characters and only 1 hour of the show.

Now Louise is getting much more air-time and frankly I find her more
interesting than Harry (whom I also like).

I think Alex (apart from the odd ditzy moment) has the least air-time and
therefore the most boring.

I think overall it depends on the amount of airtime BigBro gives each housemate that affects the publics opinion of each them.