Two ex Google engineers, Tom Costello and Anna Patterson, along with a third person, Russel Power, have released a new search engine. Cuil started with 120 billion indexed pages and they stated that their new search engine has the biggest index of them all. Probably they haven’t read Google’s last post, where they say to have indexed more than 1 trillion pages, which is almost 8 times more than that.
From the tests I was able to make until it got down, it doesn’t seem very relevant and there are a lot of searches it returns no results, while other search engines do.
Cuil is a wannabe semantic search engine, understanding the meaning of words, but it’s not very good at it. Until now, I didn’t find anything I could like at it, better than Google. What I am satisfied of is the simple design.

A simple SEO guideline says that you should end your urls in .htm, .html or make them as mine. Some do not follow this and end them in .php, .asp and other programming languages. It might not be as good as the ones ended in .html, but Matt Cutts say they are and there’s no problem.

Yet he stated clearly that URLs ended in .exe or .0 were not indexed at all until a few days ago. Now it seems Google does index them but we can’t be sure it gives them full trust and doesn’t penalize them.

SEOmoz has faced this problem with their Web 2.0 Awards, that had the url “http://www.seomoz.org/web.2.0″, which finished in .0 .

So take care how you format your URL to be search engine friendly and don’t get penalized.

Have you ever faced an issue with an improper formatted URL not to be indexed by Google ?