For the common goal of obtaining higher SERP's, will multiple links from single sites help, or is it better to get links from unique sites? For instance, I've been shopping for blog postings, and some just have better deals than others. So would it even benefit me to buy several articles from the better deal site, than you go elsewhere and pay more? How does "G" look at 10 links (on multiple pages) from one site verses 10 unique sites with similar PR? Thank you!
In my opinion a few links from one site = one from another so its better to spread them out to different sites but theres nothing wrong with a few multiple posts from one blog. If your going to pay defiantly use different blogs and make sure if your buying them from one person that there on different ips and not on the same host.