Search Engine Marketing (SEM) & Search Engine Optimization (SEO)

Google acquired reCAPTCHA on September 16, 2009. Luis von Ahn, reCAPTCHA founder and a research scientist at Google explains how it works.

Video on how you can use RDFa markup to let Google Image Search know which licenses your images are released under. Recently, Google introduced a new feature on Google Image Search which allows webmaster to restrict search results to images that have been tagged for free reuse. RDFa stands for Resource Description Framework – in [...]

IP delivery for SEO is the method of delivering different content to search engine robots than to human visitors. The determination if the visitor is a known search engine robot is done based on the IP address. SEOs compare the visitors IP address with their list of IP addresses, which are known to be servers [...]