Are you talking about puting the blog's content on your website and then stop using the blog?
How effective is it to use recycled content that has been used in the past but the original has been removed? For instance in cases where you buy a blog and merge the content onto another site that you own.
I think it will be effective if you spin that content little bit and submit in article directories to get links, I don't think it will be good to reuse it again on personal website/blogs.
If you're going to recycle content, I would strip it from a page - then add the noindex/nofollow meta tag, then go into the Google Webmaster control panel and remove the URL from the index completely. Then shut down the site. Then reuse the content. Doing it this way ensures that it's all gone.
What I would do, and this may be a lot mundane work depending how much content there is, I would 301 each page to the new website where the new page is. This tells a search engine that the content has permanently moved to a new location.
Submit new proxies -
Kovich (6 November, 2009)
I was thinking of that as well, but I wasn't sure if you could 301 individual pages with Google Webmaster panel.
I suppose doing it with that wouldn't be necessary though.
If you own the domain of the website with the content you want to use make sure that EVERYTHING is de-indexed or properly forwarded in your .htaccess to your new website.
Why go through all that trouble though,
when you can just buy freshly written and customized content, and need I say, targeted, for dirt cheap?
Seo may be right - you could be better off just keeping the site and buying different content for your other one.
I guess it would depend on the nature of the articles. Medical, highly technical, 'how to' articles may be worth recyling and are more expensive to create.
Another factor is how much content you are getting in the purchase of a site. Lets say you buy a forum or a blog with 500+ post and quality comments. There can be some value there.