I've been on DW for a year now; I have friends who co-exist on LJ and IJ and DW, or any two of those three. There are all kinds of different ways to span the gaps between the journaling services, and I'm happy to help point you to instructions for whatever choices you make.

For fiction archiving, I heartily recommend cross-posting a copy to the AO3 in addition to wherever else you choose to post it.

I'm a strong believer in the idea that diversity in fannish infrastructure (reducing dependencies on any one service) strengthens us all.

Check your email, I've just sent a DW code. :-)