No, there is no problem at all. The key is to make your own DAL/BLL depend on interfaces. When you need access to DNN API, wrap them up as an implementation of the interfaces and inject that dependency using a IOC container.

In a word - Moderation.  Posts may not appear for some time because of moderation.  Also, they seem to randomly delay beyond the approval time, possibly caching of the old information or something else.

Jeff

Frank , Good idea , yes I read about this before ..

and i think its will be very helpfull if i need to build the modules in a way that it depends on the DNN portal ..

and the IOC has some helpers in the new enterprise library , i will look at that ...