Dubbed Caffeine, the new algorithm looks to give Google a much-needed jolt by delivering more results, and better results.

Indeed a quick inspection seems to indicate that the site is ready to deliver on this promise.  A quick search for "DailyTech global warming" yields about 30,700 results in the new engine, versus a mere 23,100 in the current engine.  The returned content also appears to be better in many cases.  Returning to the previous example, the new site also returns a total of four pertinent DailyTech articles as its first four results, compared to only two returned by the current engine.

On Google's blog about the site the a user named Holly adds, "I've noticed more Twitter pages in the results with this version of Google. Quite like having that - makes it easier to find people and companies."

Another user comments, "Wow, the index is way more pertinent, less spam, more good Web sites. I'm tracking a lot of searches and see huge improvement in the quality of results."

Still criticism is also cropping up.  Comments another user, "Nice idea but I can't find a lot of my site[.]"

And another user reports, "I'm tryig (sic) to access on my symbian phone, but the address redirects me to the same URL with a "/m" at the end and that show me a "403" error page. is this an issue with the the Opera browser installed on my phone? or this version is not compatible with mobile?"

The trial release of the new engine came as somewhat of a surprise.  Google had been known to be working on a new engine, but no release date had been previously known.  The news broke when Google engineers Sitaram Iyer and Matt Cutts posted a blog with a link to the new search.

They describe the new search engine, stating, "For the last several months, a large team of Googlers has been working on a secret project: a next-generation architecture for Google's web search. It's the first step in a process that will let us push the envelope on size, indexing speed, accuracy, comprehensiveness and other dimensions. The new infrastructure sits "under the hood" of Google's search engine, which means that most users won't notice a difference in search results. But web developers and power searchers might notice a few differences, so we're opening up a web developer preview to collect feedback."