How many pages should I make indexable?

Do I let Google see everything?

[Onders]

Hi everyone - just thought I would see if anybody could throw their ideas at me about indexable pages. I have a jobsite and my content is therefore very dynamic. New jobs get posted all the time and old ones get removed.. What do you think would be the best way to structure the site - let all job pages be indexable (allowing Google to index many many more pages) but have the problem of the content on that page disappearing after a short time when the job goes offline and then having to use redirects to get the visitor to the homepage or just not let Google index the pages....
Any thoughts would be appreciated!
Thanks

[Vadim]

There is a good general principle: good URI (URL) should stay but their content may change.

It means that it is good to let Google index the URL's that do not change the topic often and exclude the URL's that often change the topic.

Actually one should avoid the URL's with the variable topic. With the dynamic content it is possible.

For example, for the job site URL should corresponds to a particular type of the job and not to the particular job offer.

The content, to which URL points, probably should be the list of the jobs of the given type. The list is dynamic but the type of the job should not change.

Vadim.

[166geary]

Vadim nails it on the head with:

"Actually one should avoid the URL's with the variable topic. With the dynamic content it is possible."

Once you can get that inorder, try to limit the number of parameters (ie: page.html?job=manager&loc=us) in the dynamic link - less than 3, if you can.

[Onders]

Vadim - thanks for that. Are you suggesting that making individual job descriptions indexable is probably not a good idea as they will change when a new job replaces that one? But making URL's indexable which for example give type of jobs and sectors is OK as that stays constant (content will be dynamic though). What do you think?

[Vadim]

Yes, this is about what I meant.

I am not an expert in job sites and don't know whether it is realistic but I believe that it would be even better to make so that individual job descriptions have no URL's at all and are dynamically supplied from the server to the pages with the list of the job of a particular type.

Vadim.