I have an aged PR3 domain. I've owned this domain since it was registered, so it's not a question of buying a domain, but I am repurposing the domain. It has had an eCommerce store on it, which is not doing much, so I am taking the store down and putting up a wordpress blog which I am going to use in a blog network. I have hundreds of incoming links to this site and plan to set up redirects so that all the incoming links resolve to new pages on the site. Is there anything else I need to think about doing in order to maintain the site's PR? thanks
I think that will be enough. Create some backlinks to the new blog for freshing up the place. Good luck
PR depends upon the backlinks to your site. Since it was an ecommerce site, so it may have many pages for products etc and also many people have given link to you because it was an ecommerce site and can remove those links as it won't help their visitors(in case they have given ref. in any articles).. It is just a probability. You need to do 301 redirect to all the old URL to new one... you ranking may fluctuate for some time but after little work it can be re-gained.
i think you have done enough for this domain, but try to make some back- links and make them continually