Comments with patch:
http://ez.no/developer/contribs/hacks/eztagclouds_limit

"Short" (from Peter):
Let's say I want the 10 most common keywords in my tagcloud, but in alphabetical sorting (otherwise the tagcloud looks dumb, IMHO). That's not possible with the current trunk ezwebin. Either you get the first 10 keywords in alphabetical order, or the 10 most common ones in order of keyword count.

A ridiculous example:

Let's assume I have got the following keywords (with respective counts in brackets).

Anton (2), Berta (1), Caesar (3), Dora (1), Emil (4), Franz (1)

If I use eztagcloud(limit, 3, sort_by, array(count, false())) (Query A), I get the following result:

Emil (4), Caesar (3), Anton (2)

If I use eztagcloud(limit, 3, sort_by, array(keyword, false())) (Query B), I get the following result:

Anton (2), Berta (1), Caesar (3)

What I really want, however, is this:

Anton (2), Caesar (3), Emil (4)

To get this result, eztagcloud needs to first determine the minimum keyword count resulting from Query A, and then use this value (2 in the example) as an additional HAVING clause for Query B (e.g. 'HAVING keyword_count >= 2'). It can either do that as a separate query or as a subselect - I'm not sure what's more efficient with MySQL. Having a second query is slightly easier to understand in PHP, I guess.

I've implemented a quick-and-dirty solution for my own blog using two queries, but if you're interested, I could certainly develop that to a proper patch. However, to make it really clean, we would probably have to add a new parameter that makes it clear that while the sort order is alphabetical, the limit is applied in a different way.

Steps to reproduce

Index: trunk/packages/ezwebin_extension/ezextension/ezwebin/autoloads/eztagcloud.php
===================================================================
--- trunk/packages/ezwebin_extension/ezextension/ezwebin/autoloads/eztagcloud.php       (revision 3470)
+++ trunk/packages/ezwebin_extension/ezextension/ezwebin/autoloads/eztagcloud.php       (working copy)
@@ -127,6 +127,18 @@
                    $tags[$row['keyword']] = $row['keyword_count'];
                }

+               if ( isset( $params['post_sort_by'] ) )
+               {
+                   if ( $params['post_sort_by'] === 'keyword' )
+                       ksort( $tags, SORT_LOCALE_STRING );
+                   else if ( $params['post_sort_by'] === 'keyword_reverse' )
+                       krsort( $tags, SORT_LOCALE_STRING );
+                   else if ( $params['post_sort_by'] === 'count' )
+                       asort( $tags, SORT_NUMERIC );
+                   else if ( $params['post_sort_by'] === 'count_reverse' )
+                       arsort( $tags, SORT_NUMERIC );
+               }
+
                $maxFontSize = 200;
                $minFontSize = 100;