Drupal Views : Cumulative filtering from an exposed tag cloud Sorry for this newbie question... 
I hope you can help. 

I need to set up a search result page, with a tag cloud as a filter. 
If user select one tag (termX), the matching rows are being displayed. 
He could refine his search by clicking on a second tag, to refine it even more (displaying results matching termX AND termY). 

Ideally, the selected tags in the cloud, should be visually seen as "selected". 

Any idea which module should I rely on ? 
Do I need to go through a custom development instead ? Any hints ?
You could use views with exposed filters. You can set filter criteria to "exposed" so the user can choose which filter he would like to have. With the module "Better exposed filters" you have the possibility to format for example a select list as links.