I have a IP-100 and looking on my Rainwisenet>settings I have Weather Underground, AWEKAS, PWS weather, and Weather Flow as the only options for auto send, I do not know if the others got dropped and Rainwise has not updated their docs, or if it is that they plan to do the others listed in their docs in the future... now as far as the IP-100 itself your only upload option is Weather Underground if your not going to use Rainwisenet.
Kevin