I have a free API which provides business rating info about the business behind a web site.[1]  Try:<p><pre><code>   http:&#x2F;&#x2F;www.sitetruth.com&#x2F;fcgi&#x2F;rateapiv3.fcgi?url=ycombinator.com&amp;format=json&amp;key=guest
</code></pre>
It gets modest usage.  We can limit usage based by &quot;key&quot;, but currently don&#x27;t have to.  It does have fair queuing; if you submit a large number of requests from the same IP address, you won&#x27;t delay requests from other IP addresses.  This is enough to deal with anything short of a determined DDOS.<p>[1] <a href="http:&#x2F;&#x2F;www.sitetruth.com&#x2F;doc&#x2F;sitetruthapi.html" rel="nofollow">http:&#x2F;&#x2F;www.sitetruth.com&#x2F;doc&#x2F;sitetruthapi.html</a>