I have 5-6 PR2-PR4 websites that just sit around the web with no specific purpose. I just wanted to ask is it wise to use them to backlink my swedish site? It's completely in sweden language, but the other sites (pr2-pr4) are micro niche sites with high PR.
Now, is it OK to use them if I don't seperate them with different hosts/ip's etc? And is it OK to use them to backlink my swedish website? IF YES, then should I make a contextual blog post or just add them to the sidebar?