I am wondering if it is still okay to blast your first tier sites (Web 2.0s) with programs like Scrapebox. Or is it best to build another tier or two of Web 2.0 sites beneath them.. perhaps some of the lesser quality Web 2.0 properties.. and then blast those with Scrapebox? Basically I am concerned that Google is looking at what types of links are pointing to your first and maybe second and possibly even third tiers. And whether or not they might be penalizing sites with spammy links pointing to sites like Wordpress, Squidoo etc. Lastly, maybe a dumb question, but is it okay to have the same Web 2.0 property (say, Wordpress) in multiple tiers? Or should I only have the top quality Web 2.0s in my first tier?