Today I came across a video by Jon Morrow, Associate Editor at Copyblogger. He just started a new website, GuestBlogging.com, and is posting videos about how he used guest posting to build his subscriber list from 0 to over 1000 in 2 months. It's a case study.
Caveat: In order to see his videos (other than the intro), you have to subscribe. I subscribed (OK, so I admit, I'm a junkie when it comes to things like this). He has said he will be promoting a product in about a week, but for the next several days, his videos will be content-heavy without any marketing hype.
Jon Morrow is credible and I just watched the first video myself. I can tell you there is some seriously solid info in there with some great, practical tips about how he got the attention of big bloggers, screenshots of his traffic stats and a list of things you can do to take advantage of guest blogging yourself. So, if you're intrigued by the whole guest posting process and would love to hear how someone did it in real life, you might be interested in checking it out.
P.S. I'm not getting anything to promote it for him in case anyone is wondering. I'm just trying to cull through the massive amounts of blogging info out there and presenting you with stuff I think you can really use.