There are many nice things in Post2Blog - though I’m not sure about the emoticons, I’m both amused and disconcerted by the feature that replaces certain words (like Post2Blog itself) with a snippet of stored text, it counts LJ user tags as a Web service and I’m not sure about seeing the tags in the post window as I compose. But it has a Word toolbar so I can compose in my favourite place (Word!) and I like the spelling checker. On the gripping hand, I can’t yet find any way to do LJ user_pics...
EDIT: the LJ tags seem to need a little work