I too need a way to embed an online map into our Wordpress site but it does not appear to be an option right now.Apparently, Wordpress doesn't like the iframe code that the online map uses. Search the Wordpress's forums and you can get some more details but there doesn't seem to be any sort of work around at this point. It'd be great of ESRI and Wordpress could communicate a bit to make this work as their both aware of the issue. Wordpress does support some iframe code but only approved types, google maps for instance, so it might help to urge Wordpress to put ArcGIS on their approval list.