Yep, Google destroyed myblogguest. I like this community though. Safe bet is now to just make the links "no follows."
Oh yes, Many of the sites have got penalty from google who have registered their accounts in MBG networks.
I am user of MyBlogGuest, although I don't use it too often. If you were really in the mood of swimming and digging until finding the good sites, it was a really useful source of links. The paid service was for some "preferences" and "special features". You could get a lot from the free account too. Yes, many bloggers have recommended to no-follow those links. If you use Wordpress there is even a plugin for that. Anyway, the problem with guest posts is not the fact you got them from MyBlogGuest. It is, as usual, that guest posting as a link-building technique was abused. Some just spinned an article in dozens of different variants and used guest blogging services to get a few dozen links. When Google noticed it (who was stupid enough to send an e-mail to Matt Cutts to offer him a guest posting service, for <censored> sake?), it just started considering spam. Yet if you use it as you should, that is, writing a unique article to each of your unique blog hosts, nothing wrong happens. As a matter of fact, any of the sites I got a link for via My Blog Guest got warned or penalised. So, well, it is not the idea. It is how you use it... once again.
True that blog guest posting was abused for a long time now, but still MyBlogGuest was hit, "by the way" and that's a bit of shame
I care less about PR. I'd rather get more traffic and conversion to my site and be on the top of the SERP.
I believe in order to get your site on top of the SERP - your site must have better PR than other sites. correct me if i am wrong.
Wrong. You can actually try searching on google and see it for yourself. There are actually sites that are top on SERP but doesn't rank that much..