It does seem like this would be a lot easier if there were also chat (or even if it were chat-only). If you're talking about code, it would be really helpful to be able to paste in snippets or links to resources.
Agreed, some questions are more easily answered through chat and #RubyOnRails on freenode is a great place to get help.
However, I think the cool part is that it's not text.
Personally I've find it to be really helpful when I'm stuck just to talk through the problem with somebody else. Often just the act of vocalizing dislodges the log jam.