By the way everyone, if I could amend that original article, where I talk about promoting your site and blog networks, I'd say this.
Before I gauged the various risks of public networks as thus:
Blog network that advertises itself on blackhat forums and generates backlink reports: 100% threat
Blog network that advertises itself on blackhat forums and doesn't generate backlink reports: somewhat threat
Blog network that advertises itself on blackhat forums, but has limited signup and closes when full: limited threat
Blog network that barely advertises itself, except through word of mouth: virtually no threat
Blog network that you own yourself: no threat
Right now, from what I've seen with the fallout of Anglo Ranks and the stiff penalties those sites have received, along with the recent video of Matt Cutts saying they were going to continue taking down public blog networks, I would rephrase my original threat assessment as follows.
Any link package you can buy, where those links come from domains owned by the link builder: big threat
Owning your own blog network: no threat
Of course if there's a smartass that comes in here and posts "Oh but they don't actually
own the blogs, they just
broker links onto the blogs" (you know who you are), if anyone or any thing owns that blog and is selling link packages, whether brokered or whatever, its a severe risk.
If you're going to buy those types of link packages, don't do it to your main money site. The penalties I'm seeing from Anglo Ranks being targeted are extremely severe. Keep your money-site link building activities to web2.0s, social sites and your own personal, private blog network.