This plugin works with BBClone. You install the counter script (get it from here), set it up and then install this plugin so that instead of a chunk of php code pasted in your textpattern page, you can use a txp tag instead, which I find much more neat. At the moment it just outputs the number of unique visitors, future development would include making the tag accept attributes to output other statistics as well. It’s not a complete solution plugin, you also have to add this little snippet of code to your index.php:
if (is_readable(COUNTER)) include_once(COUNTER);
This plugin is not exactly the same as the poe_bbclone plugin; they can be used together. poe_bbclone is used to get the statistics-application working with your Textpattern site, and this and_bbclone_plugin tag is used to output the number of visitors on your page.