Illiquid and/or low float penny stock can be easily manipulated. You, me or anyone can manipulate WDDD down to 0.25 or below, or up to 0.30 or higher. And the next day, someone else can create the opposite price movements ...
And it is not uncommon to have big spread in bid/ask in WDDD and other illiquid and/or low float penny stocks. So do not place market buy/sell orders unless you are desperate.