Should I interlink all the websites my company owns?

[Skydreamer]

Our company has several websites where visitors can request quotes for home improvement. I'm thinking of making each site deeplink to each of our other sites, to create more linking domains and make all our sites help each other.

Is this a good idea? Or will Google recognize that i'm only promoting our own websites and see this as a bad thing?

[Skydreamer]

Thanks for the advice, all of you. Will start interlinking and secretly build the company's death star, to be unleashed on the public at a later time.

[Skydreamer]

Thanks! The big kickass site is in the planning, but will take some time.

It's going to be potato guns for now, while we're building our battleship.

[AlanMosley]

Zsolt makes some good points

It not a problem, it’s a natural thing to do.
As far as PageRank goes if you link to every website from every website it will have neutral effect over all, but your worse ranking sites will get a boost at the expense of the higher ranking sites. You can alter your links to benifit a site you want to give a boost

But since there is value in link text relevance, you should come out on top all over
Having said that it’s better to link in a way that looks natural to your users.

I would not have these as my only links if they are on the same ip number, but as long as you have a good range of links from other places it is ok to have links from the same ip number. i think people get a bit excited about same IP or same C-class.

[sesertin]

And that is even a better advice than mine.

[EGOL]

will Google recognize that i'm only promoting our own websites and see this as a bad thing?

Google is really smart and knows that people have been manufacturing links this way for a long time.

In my opinion, a better idea would be to merge all of these little websites into one big kickass site.

You can do more damage to the competitor with one battleship than you can with ten potato guns.

Also... one big kickass site with tons of information and resources usually impresses the visitor more than a hotdog stand with a lot of links to similar websites.

[sesertin]

If I get it right sites are based on the same topic, so interlinking them carries both user and search engine value (maybe a little bit less for engines than for users as google maybe knows that you own both sites so it gives less value to the links). When you do your linking just keep in mind what pages would you like to rank with and hw pagerank flows so do your job based on that http://perthseocompany.com.au/seo/tutorials/a-simple-explanation-of-pagerank (thanks ALan). Good luck!