While trying out diffrent search forms from other plugins that providing som kind of profile matches (like GEO my WP, Event pro etc etc), this plugin is the most simple and logic implemented as it copies the behaviour of edit profile form fields. Many other forms does not handle select and options, and using checkboxes to match each value when searching select option values. This does not. The dropdowns are there and also mirrors any checkbox field.
It´s easy to rebuild for any more complex functionality, like adding promixy search or dancing with other plugins, if you have some know how about transporting/ filtering posted data in wordpress.
There is no hook to add multi lang support, as xprofile in buddypress either does not support string translations of labels and values. But this plug is so easy to understand and fix support for WPML / text call support - responding to BP.
For a larger scale of members, you need to filter the sql query first, and let the plug search in indexed blocks.
Tested with 600 xprofile fields/ each user, in a buddypress dating community.