A little time has passed since this New York Times piece on open access and dodgy journals. Bottom line: anyone can set up an open access journal and hence, bad quality ones are appearing. Moreover, if you go open access with a traditional journal, some publishers may try and cast themselves off as you. At a recent conference, Clay Shirky appropriately noted that this was just something that comes from openness. For instance, have open email and you get spam. Things will work themselves out and this will eventually be minimised.
In the meantime, just a pointer to two other interesting sets of articles on open access.
First, PressForward have a great and comprehensive review of open publishing on the web.
Second, Nature have an entire issue devoted to changes in scholarly publishing. It includes several articles related to the spam type of concerns.