Bug report even though there appears to be no one around to fix bugs, just in case. (I wonder who fixed the certificate?)
For some reason, searching the site for "twitter", then trying to view a results page other than page 1, failed to load. Even stranger, when I ran the search several times, even the first page for "twitter" started failing to load. Changing the case (e.g. "TWITTER") or adding spaces (e.g. "Twitter ") did not affect this.
Edit: Seems to occur for any search term with over 1000 results, or at least with over 34 pages (since the page count stops at 34). Try it with any Touhou major character like "Reimu" or "Marisa".