Not long after noticing Blackle (a black-themed search engine based on Google), others have joined the party. Welcome jabago.
It’s all the same concept (with an added tweak of ‘reduced eye strain’), as the site says:
Jabago.com provides you with a black Google search portal to reduce eye strain and save energy while conducting Google searches. All searches from this portal will take you directly to google.com with a black background and light text.
Of course, a bit of digging around on the WSJ recently showed that the energy benefits are limited to CRT screens, rather than LCDs. But there’s still got to be millions of those around, we’d guess?