Xobni Basic is crippled compared to Xobni Plus in a way that doesn't turn me off completely to the light version and has gotten me to convince the boss that Xobni Pro is worth them coughing up $29.95. Although the free version should at least allow search operators: AND, OR, "", etc.
I think we'd all agree that it's pretty difficult to get away with naked market segmentation -- why domnmod a guy for complimenting a successful implementation that worked on him?