Basic SEO help

[impact]

Hello,

We own multiple domains alias of our company domain name. For example; a.com , a.info, a.cc etc.

We wish to set a science blog which is irrelevant to what we do. We understand the benefit of hosting it in the main domain (a.com/SicenceBlog) will bring more visitors and more frequent crawling by the search boots but we are also thinking the other alternative that is to devote one dedicated domain for all such things, like a.net/ScienceBlog, a.net/HelpFiles,a.net/Totorials

Any help from the SEO point of view will be appreciated.

Thank you,

[martinibuster]

I think to answer the question it would help to know what the company hopes to accomplish by creating the blog. Specifics are not necessary and it's probably wise from a competitive standpoint not to mention them, but a general statement of what is the desired end result can help answer the question.

[impact]

Thank you replying. We make products for plants. We have a blog which talks about plants & their well being. This is a free service and we earn little from Google adsense. We have plans for few more blogs of similar kind. We have linked some of the pages from these blogs to our products page.

Now they want to start up with blogs which is not directly related. This will also be a free service. We shall try to help local school children.

Making money is not important. They only thing we are concerned about is the SEO. if making blogs we can improve our site, well & good, otherwise no problem.

[kaled]

If you can build your blogs into an "authority" then use a separate domain name. Otherwise, from an SEO point of view, it probably doesn't make much difference what you do.

Kaled.