if you have the platform run on co.com host then it is a normal part of the site (for statistics etc) ?

yes

This is one of the reason why companies use this tactic.

Blogs can be used in 2 ways.

1st as you mentioned before. This way gains extra pages, visits, page views and rank to the main site

2nd on a different domain with constant links to the main site. This way helps the main site get many backlinks!!! Very important for SEO

nice Spyros. Thanks... I want to add a "personal-independent" blog in my company's new website and it will be nice to help the site also

but the 2nd strategy is also interesting

in 1 blog.co.com and www.co.com/blog is the same ?

Yes, it depends on what you need. If you have the time to support 2 blogs, the combination will do wonders for you SEO

no, using a subdomain like blog.co.com is much better than the other option.

the reason is that subdomains are "domains" and are thus treated as such by search engines

giving you an extra domain pointing to your site!

So, subdomains are the way to go

you are really helpful... when you need a ticket or holidays contact me

sure mate! I actually do need tickets!

do you work at a travel agency?

yeah...a family owned one

I will private plurk you for this

by the way, I post about SEO issues on www.webdesignblog.gr. It is all in Greek

Thanks mate !!

Cheers