Good for WD in exposing these LCCs scams. Baby are not the only one's. One day, the punters will wake up and realise the full fare carriers are significantly less hassle and very often just as cheap.
At the moment I have Baby, Easy & Ryanair on my black list. The truth is, they are IMHO too much hassle to be worth trying to save a few quid on a flight. I know sometimes there is no option on certain routes but to use these guys, but boy, when I have a choice they won't see me for dust.