These headers are respected by browsers and behaviour changes with specified header information.HTTP/1.1 200 OK Date: Tue, GMT Server: Apache/2.2.16 (Debian) PHP/5.3.3-7+squeeze18 with Suhosin-Patch mod_python/3.3.1 Python/2.6.6 mod_perl/2.0.4 Perl/v5.10.1 Last-Modified: Mon, GMT ETag: "26ac3c6-90-4466db641fc80" Accept-Ranges: bytes Content-Length: 144 Connection: close Content-Type: text/html Importance of this data: Whois provider display everyone's info publicly if not hidden by owner.So ownership details including phone num, name, home and business address, etc.

edatingtips info-52

Google PR is one of the method of google for giving importance to site.

They rank each site according to their own data collection tools and analysis.

Importance of this data: Ranking systems work on a number of algorithms updated almost daily by most popular search giants.

This helps finding competitor's isp, knowing more hosting services/providers.

So you also have a better variety to choose from multiple isps you are aware of.

Importance of this data: HTTP request is followed by headers sent in a response of http request.These headers were returned when we requested to open the site on our side.Web server displaying the type of server used by a domain.Importance of this data: Html tag head includes several tags for search engines/bots purpose.Mostly they are used by browsers and search engines to show basic detail of a page.Most popularly used meta tags are title, description and keywords. Importance of this data: This lets you know to find where is the isp is located.