Q : What are SERPs?
A : Search Engine Result Pages

Q : What is Hidden Text?
A :Text that is visible to the search engine spiders, Crawler but not to site visitors. Hidden text is primarily focused to add extra keywords and phrases in the page without actually adding any content to a site which may mostly consist of images. Most search engines will penalize these Web sites which use hidden text.

Q : What is cloaking?
A : Determining which search engine spider, crawler is visiting a web page and then giving each spider a page optimized for it's particular algorithm. This method of search engine optimization can result in a website being removed from the major search engines.

Q : What is a doorway page? and its effects on Search Engines?
A : This method is considered to be SPAM. These are pages created for nothing but the purpose of ranking first for a particular keyword phrase. These pages usually lack any significant content and do not reflect the tone of the rest of the website. If a search engine determines a website has used this tactic then the website will be removed from the search engine permanently.

Q : Are HTML pages rank Lower than XHTML-pages?
A : No. They have the same value. Google however puts more weight to well structured content, and thus XHMTL is in most cases more suitable option.

Q : Does rankings by using CSS ?
A : Not directly. Googlebot does not (at the moment) read CSS-files. Using CSS
makes pages lighter, and page structure more organized. Thus using CSS could
lead to better rankings. When any website adding CSS styles to page, it is recommend to put them to external file (using link-tag).

Q : Should I submit my website to Google every month?
A : you only need to do it once only. In most cases you will not even need to
submit your website to Google. If you are active in building links to your website
then Googlebot will frequently visit your website soon, and then include it in the index.

Q : Why should I use a Site Map?
A : Every site should have a sitemap. It provides a flow for visitors to navigate your site, as well as a shortcut for robots to crawl all your webpages. Google for sitemap and you'll find nice examples, although it would be advisable to follow Google's official guidelines.

Q : What is an In Bound Link (IBL)?
A : An "IBL" is an 'In Bound Link'. When a site links to yours, that
link is an IBL. The same thing as a BL (Backlink).

Q : What is cross linking?
A : When multiple sites link to each other for the purpose of increasing link popularity.

Q : How long after I am listed in DMOZ should I start to gain the benefit of the "4000" new links?
A : It usually takes close to a month for your website to show up in Google Directory. Then to gain the full benefit it may takes 1 - 2 years to fully propogate. This is a good way to make sure all links realize their full potential as that slow growth is something that Google seems to like.