I came today a discussion against which concerned the advantages and disadvantages of subdomain in comparison with directory. In short which url do structure it better in search engines? Sub.domain.com or Domain.com/sub.
If you are in search of a side and ready answer must disappoint then I you. These do not exist, as it happens. Both applications have them in front and their disadvantages. Google see both urls total differently. Sub.domain.com are considered as a new site, whereas domain.com/sub is considered sit as a component of domain.com. also for and the disadvantages.
Because sub.domain.com are considered as a new field you own ranking also your must build. You start therefore from beginning to with this field and pagerank and must build trust trustrank. Such a site is for this reason owns link network is necessary. Large advantage of this treatment is however that you can aim yourself complete site on 1 subject (theming), Google this also will see as a result of which improves you in the course of the time will score on this subject.
The other option is considered as a new component of your site. You might profit of your existing trust trustrank and his own link networks are less necessary. Disadvantage however that you are component of a site with several subjects; you have been therefore less focused on 1 subject.
Sub.domain.com
It is seen as a new field Google:
Advantages:
• Entry in front url
• Clearly aimed at a certain subject
Disadvantages:
• Own link network necessary
• Age of subdomain counts
Domain.com/sub
it is seen as a component of domain.com:
Advantages:
• Can profit of age of domain.com
• Can profit of link value/pagerank domain.com
• In short can profit of factors domain.com
Disadvantages:
• It is seen as a component of Domain.com, as a result of which therefore less targeted on 1 subject
• Keyword stand behind in field
All nice and quite, but what must choose you now? I barrage this choice entirely to you. Have to you much content over 1 subject and time an own build link network for this subject, then I would choose for subdomain. The quantity content has been limited and is appropriate it well at the head field, and then I would choose for directory. Consider for this reason firstly well what your objectives are.