diff -puNr xapian-omega-1.0.8/omega.cc xapian-omega-1.0.8-sorter/omega.cc
--- xapian-omega-1.0.8/omega.cc	2008-09-04 07:52:13.000000000 +0200
+++ xapian-omega-1.0.8-sorter/omega.cc	2008-09-16 14:25:42.000000000 +0200
@@ -72,6 +72,7 @@ bool sort_numeric = false;
 Xapian::valueno sort_key = Xapian::BAD_VALUENO; // Don't sort.
 bool sort_ascending = true;
 bool sort_after = false;
+int sort_factor = 0;
 Xapian::Enquire::docid_order docid_order = Xapian::Enquire::ASCENDING;
 
 Xapian::valueno collapse_key = 0;
@@ -330,6 +331,13 @@ try {
 	if (val != cgi_params.end()) {
 	    sort_after = (atoi(val->second.c_str()) != 0);
 	}
+	val = cgi_params.find("SORTFACTOR");
+	if(val != cgi_params.end()) {
+	    sort_factor = atoi(val->second.c_str());
+	    if(sort_factor > 10000 || sort_factor < 1) {
+	    	sort_factor = 0;
+	    }
+	}
 	// Add the sorting related options to filters too.
 	filters += int_to_string(sort_key);
 	if (sort_after) {
diff -puNr xapian-omega-1.0.8/omega.h xapian-omega-1.0.8-sorter/omega.h
--- xapian-omega-1.0.8/omega.h	2008-09-04 07:52:13.000000000 +0200
+++ xapian-omega-1.0.8-sorter/omega.h	2008-09-16 14:24:37.000000000 +0200
@@ -60,6 +60,7 @@ extern bool sort_numeric;
 extern Xapian::valueno sort_key;
 extern bool sort_ascending;
 extern bool sort_after;
+extern int sort_factor;
 extern Xapian::Enquire::docid_order docid_order;
 
 extern Xapian::valueno collapse_key;
diff -puNr xapian-omega-1.0.8/query.cc xapian-omega-1.0.8-sorter/query.cc
--- xapian-omega-1.0.8/query.cc	2008-09-04 07:52:13.000000000 +0200
+++ xapian-omega-1.0.8-sorter/query.cc	2008-09-16 15:07:00.000000000 +0200
@@ -379,8 +379,12 @@ run_query()
 
     enquire->set_cutoff(threshold);
 
+    Xapian::RoundedWeightSorter * rwsorter;
     if (sort_key != Xapian::BAD_VALUENO) {
-	if (sort_after) {
+	if (sort_after && sort_factor) {
+	    rwsorter = new Xapian::RoundedWeightSorter(sort_factor, sort_key, !sort_ascending);
+	    enquire->set_sort_by_key(rwsorter);
+	} else if (sort_after) {
 	    enquire->set_sort_by_relevance_then_value(sort_key, sort_ascending);
 	} else {
 	    enquire->set_sort_by_value_then_relevance(sort_key, sort_ascending);