Forum Moderators: open
Took only a couple html pages.
from http://www.mahalo.com:
Mahalo is a human-powered search engine built collaboratively by a team of editors and a community of dedicated users. Our top priority is providing you with spam free and relevant search results.
68.64.128.0 to 68.64.191.255 Los Angeles
After reading this post I went to their site and searched for "niche widgets" knowing that I usually come up in top 5 on G(That is the result set they use anyway) for that.
And after few minutes my site was Graced by a visit by this bot. So I just did a few more searches where I know I come up as #1 or in top 3 for other pages on the site. Let's see if this was a coincidence.
So, based on the search results (which looked fairly good), I'm giving this one a temporary pass to see if it results in any useful traffic, despite the facts that it doesn't fetch robots.txt, it's UA string just points to their home page, and I couldn't find any "Webmaster info" page on their site.
As with other issues I've posted about in this forum, this is not a recommendation, it's just what I decided to do... :)
Jim