If Venere is owned by Expedia, then Expedia must be keeping its grubby paws off of Venere management and just raking the profits.
Venere is absolutely great. Its user-based rating system is reliable. It lists smaller properties than you generally find in the big three or four.
A book lists a relatively few spots in a city, contains the opinions of only a couple of people, gets revised maybe once a year, and may list a property that's been long-gone.
Spot-checking Venere for Paris just now shows 790 hotels fo Jan 20, with some having over 400 raters.
I've used Venere for years and thorougly agree with the others who favor it.