I was analyzing that Linkwheel linking technique, it was a good way to get a boost on rankings. However, because all the noise made by the SEO community about the subject, apparently google adapted their algorithms to detect this structure. This was because all WEB 2.0 properties were linking to the target domain, in this way the g-bot could detect this anomaly, since each web2.0 properties were linked in a wheel fashion. Is there other linking structures? I have tested many structures on the Pagerank simulator. But I need your opinion.