The blog Entrepreneurs-Journey.com registers in Google Webmaster tools but is no follow. In other words, the webmaster tools shows it as a backlink.
Yes I've seen this as well, with backlinks showing from Yahoo Answers in webmaster tools. Says to me nofollow doesn't matter.
NoFollow backlinks still pass on a fraction on page rank, they are still useful to have. Google shows backlinks whether it's dofollow or nofollow
It shows because it's a backlink. Google doesn't count it towards your site but they're basically letting you know that someone is linking to you. It has nothing to do with nofollow or dofollow they're just showing you your links. If it's a nofollow link it will show up but not count towards your page rank and if it's a dofollow then it will show up and count toward your page rank.