Constant Content

As I understand Constant Content has four types of license.
1) Free works for websites who freely refer visitors to outside links and need your form of content.
2) Usage gives the right to use as is, but you may be banned by Yahoo and Google for "Duplicate Content."
3) Unique, if you are the first to buy and download, avoids this ban, but doesn't allow you to link internally or edit or remove writers name. If someone else has purchased usage first you lose.
4) Full Rights is the only way a website can buy and only if no one has downloaded content first. IF SOMEONE HAS THE BUYER MUST RE-WRITE THE ARTICLE OR MODIFY IT AND BREAK IT DOWN. THIS MAY TAKE MORE TIME THAN SELF AUTHORING. If some writers think that a publisher will spend top dollar for FULL RIGHTS to a general fluff article with little research, sorry.

We have thousands of articles on site and will be launching additional sites in 2007. Anything other than FULL RIGHTS doesn't work for us. We would like to depend more on "Our Own" content rather than syndicated content which we license, but not at any cost.

Most of this is correct, but "Unique" may also work for you since you can add links to the article but you can not remove the writers name or change the article.

Yes, we could use unique, but at some point might want to remove writers name. Or we may want to rewrite content to keep up with changes, make it apply more directly to a product, Reset keywords so it will be found better in search engines, etc. If you look at the terms Home Improvement, Home Repair or Home Remodeling you will see how we like to position ourselves.
Also I note that after buying some articles, they do not seem to be coming down. Is there a delay. Can someone else buy in the interim?

If you buy Unique or Full Rights the articles are removed from the site. You still can see them when you're logged in, since you purchased them. Others can not, you can test this by logging out and trying to find the article.

side note::: DIY is a pretty popular subject here as well, its a big seller so you probably will have some competition when buying articles.