CmdUtils.CreateCommand({
name: "rapidshare",
  preview: function(pblock){
    var selection=context.focusedWindow.getSelection();
    selection=selection.toString();
    selection=selection.match(/http:\/\/rapidshare[^\s]*/gi);
    var links='';
    for(var i=0; i<selection.length; i++){
      links=links+selection[i]+"<br />";
    }
    pblock.innerHTML=links;
  },
  execute: function(){
    var selection=context.focusedWindow.getSelection();
    selection=selection.toString();
    selection=selection.match(/http:\/\/rapidshare[^\s]*/gi);
    if(selection!=null){
      var links=selection.length;
      for(var i=0; i<links; i++) Utils.openUrlInBrowser(selection[i]);
    }
  }
})

The code examines the selected block of text, extracts URLs which resemble Rapidshare links and opens each link in a new tab.

To use: select the block of text, ctrl + alt to open ubiquity, then start typing “rapidshare”

PS: The code can be easily modified to work with other sites, simply replace any mention of “rapidshare” with the applicable site.