Assumed you mean MarktPlaats.nl; it has been developed by a Dutch person, Bob Crebas, who later sold it to eBay.
Ik spreek geen Nederlands is a Dutch equivalent of 'I do not speak Dutch'.
"Ik spreek geen Nederlands" is the Dutch equivalent of" I don't speak Dutch" although this wouldn't be something Dutch people would say... -,-'
"Hallo, ik ben Nederlands" is the Dutch translation for "Hello, I am Dutch"
'Dutch' is 'Nederlands' in Dutch The English word is derived from "Diets". Dutch is based on Frankish, but that term has vanished into the mists of time, or so it seems. Nederland simply means low...