It was nice to get comments on my previous Yahoo! wallet troubles post, it shows that the trouble is not an isolated incident. What's more annoying? Yahoo's support really sucks and the problem is not fixed yet. As Jasmid Afshar has commented, the security key resetting option no longer works (it has already been 10 days as of this article's date since I submitted a request for key reset - tried 3 times in intervals of 2 days each time).
I guess it looks more like a empty publicity stunt from Yahoo! to advertise about low cost products which they are not ready to sell or Yahoo! wallet is not looking into making profit in the foreseeable future and they too want to have an online store since others are having one!
Thanks for Pearl Fox, Hab, Zach, Jay and Jasmid Afshar for their feedback.