Causes out of memory problems Rated 4 out of 5 stars
Looked for help at the developer's website, but that seems just to be a general hosting site and I could find no mention of this add-on.
UPDATE January 13: A so far unpublicised version 1.9 seems to have squashed the script-loop out-of-memory problem. Ads no more slows Google searching a little, but as it's messing with Google code, this is perhaps not surprising. I'll keep it installed to see how life goes on.