I have my own small network setup and now I'm just exploring ideas and linkbuilding strategies to make sure they hold their PR and eventually increase. With the new updates I'm not totally sure what is working anymore for this purpose so I figured I'd get some input from those of you that have your own networks setup. I know maintaining and increasing PR requires a different strategy than increasing serp rankings and since most of the threads here and SEO tactics I have been studying are more based on how to increase rank, I'm not sure where to start with this one. Are high PR blog comments still good? Can I just build a handful of web 2.0s or article directory links to each one (20 or so) and then hammer those with links? I'd like to hear your thoughts. Thanks.