2
When Google scans the Xoops page, found 2 pages with same content, because the tags in articles are linked to file view.tag.php located in the module directory of articles (ex. Smartsction), while in the module XoopsTag the tags are linked to file view.tag.php of XoopsTag module.
Solution:
(module XoopsTag) edit
tag/include/tagbar.php change on line 74
$tags_data[] = "<a href="" . XOOPS_URL . "/modules/" . $GLOBALS["xoopsModule"]->getVar("dirname") . "/view.tag.php" . URL_DELIMITER . urlencode($tag) . "" title="" . htmlspecialchars($tag) . "">" . htmlspecialchars($tag) . "</a>";
with
$tags_data[] = "<a href="" . XOOPS_URL . "/modules/tag/view.tag.php" . URL_DELIMITER . urlencode($tag) . "" title="" . htmlspecialchars($tag) . "">" . htmlspecialchars($tag) . "</a>";
Note: Sorry for grammatical errors! :P