Inefficient string query againsts view_view for every page / file displayed

We recently installed 1.8 of this module. Now queries like the following represent 7% of our slow queries log:
SELECT * FROM view_view WHERE url LIKE 'node/141014%' AND page = 1;

This query is generated from the _nodewords_detect_type_and_ids() function, which is called via nodewords_get() from hook_menu() for every page (and file, including imagecache files) displayed. The LIKE string query against a non-indexed column is very inefficient, and is affecting our performance.

I modified the code to use the views_get_all_urls() function (which gets its results from cache) instead of doing a sql query, and searching the resulting array. Our performance is now much improved.

I've attached a patch which I hope you'll incorporate into the module.