Posting to different sites

Here's a thing:

I am massively grateful to Erin and all the others who contribute to the running of this site as they have given me place to put some of my writing for the world (or at least that part of the world with enough discernment and good taste) to read.

I know there are other sites out there that offer similar things, like for instance Stardust. My questions (mainly) to other authors are:
1) Do you publish the same stories to other sites?
2) Is there an easy way to do so - eg link the other sites to stories hosted at BCTS or vice versa?
3) Which other sites (if any) are good places to post/link?

I'm not sure if I'm straying over a line in posting this. I mean I feel a sense of loyalty to BCTS since I have received such a great welcome here as well as a lot of support and encouragement in taking my baby steps. I'd just really like to know what other authors do.