This is actually better than the title suggests.
I thought it might be something like automated edits to Wikipedia talk pages as a database or cache, which would be abusive.
But actually it's using Wikipedia entries as a smart name search. This is read-only and a clever and legit use of the WP. If the browsers allowed the use of spaces in the domain name portion URLs it would be even more useful, but it's probably better that they don't (out of spec for TLDs)