Well, there are lots out there! What I do is I add all of their feeds to my google reader and I just read off the reader... tonnes of them, and one leads to another.
If you are new, you can visit myblogmarket.com. Though I haven't visited there for a while, that's a newly launched blog market forum and you can get some novice advice there...For just SEO you can try highrankings forum. Anyway many of your questions will also be answered here in DP itself
Not so much blogging help and advice, more of tools I use to manage my blog. http://www.feedburner.com - see how many people have subscribed to the RSS feed http://www.technorati.com - find out who is writing about my blog in their blog Dan
Although I can understand why many people like problogger I do think there are other blogs that are equally valuable.
this is a little more widespread. shoemoney.com (blogging + affiliate mktg) problogger.net (blogging + chitika) http://blog.marketingtips.com/derek/ (internet marketing) http://www.joelcomm.com/ (adsense) ewenchia.com (affiliate mktg) http://www.mrfire.blogspot.com/ (Joe Vitale) http://aliceseba.com/ (Alice Seba, internet mktg) stevepavlina.com (personal development) www.ryanchua.com (forum advice) www.gobalakrishnan.com (blogging) www.ysf1.com (internet stuff + business) http://www.theblogrevenue.com/ (adsense) http://www.armandmorin.com/ (internet mktg) http://www.modernseo.com/ http://9rules.com/blog/ (blog network) http://www.tylerbanfield.com/ http://www.revenews.com/ (heather paulson, internet mktg) http://blog.payperpost.com/ (paid blog posting) http://productlaunchformula.com/blog/ (jeff walker, product launch formula) www.seobook.com (aaron wall, SEO book) http://www.threadwatch.org/ (seo-related blog) enough for now?