This series just continues to be really fun. Riordan has an awesome imagination and I love how much mythology continues to be used in the stories to new effect. I'm learning things I never knew and I'm gaining an increased interest in reading the old mythology tales. I've become very invested in some of the characters and I have a feeling I am going to be very sad when I'm done with the series and there are no more adventures with Percy, Annabeth, and Grover.