As much as I like their cool zebra logo, it appears that RedZee.com (link left out on purpose) is using a slew of bad tactics to attempt to gain popularity in the search space. I haven't personally seen referrals from them, yet, but some others have and based on their non-presence in the space until recently, it's hard to trust that data. It seems that they're also owned by a company called LinkPositions, whose operations are primarily in the creepy side of SEO - the type of "services" I wouldn't trust at any price.

From a cre8asite thread on the subject:

(Sanity)It does seem weird. I asked cause a site I'm managing is getting quite a lot of traffic from it. The referrer is: admin.redzee.com/pluginhtml/RedzeeSearch.aspx They seem to be offering their own PPC and for a few searches I've done there are lots of advertisers. Dunno I would have thought some of us would have heard of it...

(Whitemark) ...check if the visitors arriving from RedZee are indeed browsing your site. Check the path - are they digging into the site and following a logical path. It could be that RedZee is indulging in referral spam or log spamming using a bot. Since they have their own ad program, they might be trying to tempt you to try them out.

(Bill Slawski) I think that there's some reason to feel skeptical about a meta search engine that won't reveal the sources of its information, and that offers a toolbar that it doesn't tell you much about, while also offering a payperclick program.

You can also see from the screenshot that SEOmoz is listed in their paid results for a search on the name. I'm not sure what their game is, but something surely smells fishy.