Some updates and clarifications.

faq.html

@@ -205,11 +205,11 @@ <h1>FAQ Computer Science Rankings (beta)</h1>
 			    For any research-focused area to be
 			    included, at least 50
 			    <a href="https://en.wikipedia.org/wiki/List_of_research_universities_in_the_United_States#Universities_classified_as_.22R1:_Doctoral_Universities_-_Highest_Research_Activity.22">R1
-			    institutions</a> have publications in the
-			    top conferences in that area since
-			    2000. This threshold is to ensure that there is
+			    institutions</a> must have publications in the
+			    top conferences in that area in the last 10 years.
+			    This threshold is to ensure that there is
 			    enough research activity in an area to
-			    enable a meaningful ranking. A number of
+			    enable a meaningful ranking. A number of ACM
 			    SIGs do not meet this criteria.
 			  </p>
 			</td>
@@ -232,13 +232,12 @@ <h1>FAQ Computer Science Rankings (beta)</h1>
 		      <tr>
 			<td>
 			  <p>
-			    The conferences listed (<em>at most three
-			    per area; see below</em>) were developed in
-			    consultation with faculty across a range
-			    of institutions. These
+			    The conferences listed were developed in consultation
+			    with faculty across a range of
+			    institutions. These
 			    are <a href="https://scholar.google.com/citations?view_op=top_venues&hl=en&vq=eng">the
 			    most impactful</a> and selective
-			    conferences for each area.
+			    conferences for each area, and include most ACM SIGs.
 			  </p>
 			</td>
 		      </tr>
@@ -248,7 +247,7 @@ <h1>FAQ Computer Science Rankings (beta)</h1>
 		    <thead>
 		      <tr>
 			<th>
-			  <p><br />Why is there a cap of three conferences per area?<br />
+			  <p><br />Why so few conferences per area?<br />
 			  </p>
 			</th>
 		      </tr>
@@ -258,9 +257,8 @@ <h1>FAQ Computer Science Rankings (beta)</h1>
 		      <tr>
 			<td>
 			  <p>
-			    The cap is arbitrary but meant to include
-			    only the very top conferences in each
-			    area. All conferences listed must be
+			    Only the very top conferences in each area
+			    are listed. All conferences listed must be
 			    roughly equivalent in terms of number of
 			    submissions, selectivity and impact to
 			    avoid creating incentives to target less
@@ -283,8 +281,7 @@ <h1>FAQ Computer Science Rankings (beta)</h1>
 		      <tr>
 			<td>
 			  <p>
-			    Currently, only at most three conferences
-			    are listed per area.  Additional
+			    Additional
 			    conferences are not listed when they
 			    are not roughly equivalent to the rest in
 			    terms of number of submissions,