While we understand Darkcoin can be used for things that are illegal/unlawful purposes, we (the Darkcoin Devs) would prefer not to be associated with that in any way. What DarkSend offers is just a more private blockchain, which is useful for all legitimate business also. However, we can't really control what is done with the technology or how it is used.
Fully understandable, but a wallett issue (integrating wallet payment within a website) is a general issue, and if they achieve success with it, they can help others who will have less issues after them. (legit businesses)
Doubt they would deny help.