if you're looking for fairly common knowledge info use google - it'll give you a more respected websites in results. If the information is obscure ise yahoo/msn as their keyword orientated searches will provide the mosta ccurate results when google will show you high ranking and respected but irrelevant sites.

Originally Posted by lovely

But is it a problem for google to index new web content without backlink?

Yes it certainly is. You need decent backlinks really to maximise the speed your site is indexed, and preferrably going to different pages within your site. A couple of deep links to a site will get the spiders running all over it in no time.