Whta's a Nutch?

Whta's a Nutch? "Won't open source just make it easier for sites to manipulate rankings?

"...Search engines work hard to construct ranking algorithms that are immune to manipulation. Search engine optimizers still manage to reverse-engineer the ranking algorithms used by search engines, and improve the ranking of their pages. For example, many sites use link farms to manipulate search engines' link-based ranking algorithms, and search engines retaliate by improving their link-based algorithms to neutralize the effect of link farms.

With an open-source search engine, this will still happen, just out in the open. This is analagous to encryption and virus protection software. In the long term, making such algorithms open source makes them stronger, as more people can examine the source code to find flaws and suggest improvements. Thus we believe that an open source search engine has the potential to better resist manipulation of its rankings..."

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