nested faceted search

Hi

I have created the following custom fields using multiple drop box like below.

Cat 1
-- Cat A
-- Cat B

Cat 2
-- Cat C
-- Cat D

1. Can easysocial use custom fields as search facet and show in the left hand column ?
I have only seen "Browse by profile type"....
Also is it possible to show number of people who belong to each Facet?

2. If answer to "question1" is yes, Does easysocial offer nested faceted search like amazon?
For example, if I click Cat1- CatA in the left hand column, Cat2 still remains displayed in the left hand column and also shows number of people also selected Cat2- Cat C, D

3. If easy social doesn't support this feature, do you know any extension that able to achieve this?
Or is it on your roadmap ?

Many thanks

Hisako