Posts Tagged ‘Listings’

Major Search Engines

Tuesday, July 15th, 2008

* AOL Search - A Google powered search engine used by AOL users also pulls listings from the Open Directory Project.
* AltaVista - the Internet’s first Web Index, has very comprehensive coverage and a wide range of power searching commands, which make it a particular favorite among researchers. It gets its listings from Yahoo! Search.
* All The Web - uses results from Yahoo! Search plus an index of tens of millions of pdf and doc files.
* Ask.com - (formerly Ask Jeeves) is a human-powered search service that attempts to direct you to the exact page that answers your question. If it fails to find a match within its own database, then it will provide web pages from their search engine.
* Excite - A popular web portal (a page that, in addition to search, includes news, sports, weather, email and much more) on the web. Excite uses a metasearch engine that searches Google, Yahoo and Ask listings.
* Google - Currently the most popular search engine, makes heavy use of link popularity as a primary way to rank web sites. This can be especially helpful in finding good sites in response to general searches such as “cars” and “travel,” because users across the web have in essence voted for good sites by linking to them.
Google is also known for a wide range of features including: cached pages, excellent spell checking, access to dictionary definitions, stock quotes, street maps, telephone numbers and more. The Google Toolbar is also very popular.
* HotBot - has advanced search features and presents listings from either Ask.com or MSN and the Open Directory Project
* LookSmart includes past and popular searches right on their home page. They also have a pay per click advertising program.
* Lycos - another web portal offers “personalized content” including free email, websites, blogs and photo sharing. They include listings from the Open Directory Project. A good looking site.
* MSN Search - Microsoft’s MSN web portal also offers free email, instant messenger, and a directory. It previously used Looksmart for its search results but now provides access to Yahoo’s listings.
* Netscape Search - Netscape Search’s results come primarily from Google and the Open Directory Project.
* Open Directory Project - Uses volunteer editors to catalog the web. It was acquired by Netscape in November 1998, and the company pledged that anyone would be able to use information from the directory through an open license arrangement. Netscape itself was the first licensee. Lycos also uses the information for its main service and within Lycos-owned HotBot. Here’s more information about Open Directory.
* Search.com - A metasearch engine owned by CNET, that searches Google, Ask.com, LookSmart and dozens of other leading search engines to bring you the best results.
* Snap - An innovative search company that offers previews of websites in search listings.
* WebCrawler is a metasearch engine that combines results from Google, Yahoo! Search, MSN Search and Ask.com. They also offer a toolbar with Dictionary Search that you can download.
* Yahoo! Search - Once the web’s most popular search service is still a good alternative to Google. Yahoo is the oldest major web site directory, having launched in late 1994.

Search Engines vs Directories

Tuesday, July 15th, 2008

Search engines, such as Google, create their listings automatically. Search engines crawl through the web. Search engines eventually find your site and index the pages they find. Page titles, body text (ie, great content), META tags and other elements all play a role in what gets indexed. People then review the results of what was found by the search engine, based on keywords they type into the search engine.

A directory such as Yahoo! Directory depends on human editors to create its listings. You submit a description of your site to the directory for editors to review. A good site, with good content, will be more likely to get reviewed than a poor site. A search of a directory looks for matches only in that directory’s index.

Yahoo! also has a search engine that includes spidered websites along with their directory listings and “Sponsor Results” which are pay per click ads, similar to Google’s Adwords. Originally Yahoo! displayed only listings from their directory. Then in 2002 they added search engine listings from Google. In 2004 they started using their own search engine based on AltaVista’s technology. A few years later they acquired Overture (formerly GoTo) which was the first pay per click program.

Impact on Google PageRank

Thursday, June 19th, 2008

1. Frequent content updates don’t improve Page Rank automatically. Content is not part of the PR       calculation.

2. High Page Rank doesn’t mean high search ranking.

3. DMOZ and Yahoo! Listings don’t improve Page Rank automatically.

4. .edu and .gov-sites don’t improve Page Rank automatically.

5. Sub-directories don’t necessarily have a lower Page Rank than root-directories.

6. Wikipedia links don’t improve PageRank automatically (update: but pages which extract       information from Wikipedia might improve PageRank).

7. Links marked with nofollow-attribute don’t contribute to Google PageRank.

8. Efficient internal onsite linking has an impact on PageRank.

9. Related high ranked web-sites count stronger. But: “a page with high PageRank may actually       pass you less if it has more links, because it’s spread too thin.”

10. Links from and to high quality related sites have an impact on Page Rank.

11. Multiple votes to one link from the same page cost as much as a single vote.