Due to the untimely death of Mr. H.P. Lovecraft, combined with his lack of obvious heirs, and an interesting combination of the U.S. copyright laws, it appears that all of the works he has written belong in the public domain.
While it could be argued that his family (should he have had any) would have been well served by the wealth that could have been brought in by his writings, I would argue that more cultural wealth is being generated by the public distribution of his writing. More detailed information is available here.
While this is a FUNCTIONAL search engine, it should also be pointed out that it started as a Parody of Google. The similarity to Google is only as a parody, and not an attempt to ride on their Coattails, as it were. Anybody who could imagine confusing Cthuugle with Google would have to be fairly intellectually challenged.