Internship greatly exceeded my expectations. There were a lot more perks than I was expecting and the full times on my team were great. The experience does seem to vary based on which team you are placed in (luckily I had an amazing team). Additionally nice if you are a Canadian or UWaterloo student as there is additional mentorship available from grads that work at Yahoo (about investing, building credit, etc). Work is not super meaningful (hence 4 out of 5), but still more interesting than other places I've interned at.