Last week, the site turned on three new features which Ismail hopes will allow him to create the ultimate “product graph” (this is like a social graph for products, showing how products are related or connected to one another). Reviewers can now identify competing or related products, and vote on which ones they like better in a head-to-head, A-B fashion. The third feature is a product rank derived from the first two features. For instance, based on 15 votes, the iRex iLiad beats out both the Kindle and the Sony Reader in the e-book category (so far):

I like the ideas of a product graph and product rank. A true product graph, however, would surface surprising connections. I know the iPod and the Zune are related products, but what about the more tangential connections, like the toaster oven with the iPodish design? That is what I’d like to see.

ProductWiki is another bootstrap startup with three employees (Omar, his sister Amanie, and her husband Erik). It was launched in November, 2005, and has about 15,000 product reviews.

There are a lot of gadgets and consumer electronics we’ve talked about here. In fact, we’re getting close to our 16,500th post. That’s a lot of blogging, but more importantly it’s a lot of gear. We’re fetishists, so we’re able to keep most of it straight in our heads, but what about you, the non-obsessives?

Meet ProductWiki, a new user-organized and edited resource that is just what it sounds like: a wiki of stuff you can buy. If you want unbiased reviews of a cellphone, for example, by someone who’s actually used it, and you’ve read our thorough reviews, you can use Product Wiki to see if it’s as advertised.

But Wikis only work if you do. Take your favorite or most hated products and add them to the Wiki. Or put in your own two cents on an existing item. Point is, it’s a one-stop resource that you contribute to.

We like gear, and we like Wikis, so we like ProductWiki.