The only quibble is that the header for each post is active and looks like it should allow you to click through to the blogpost, but that isn't working for me yet. Clicking the header just takes you to a blank page on your joomla site (or at least it does on mine). But if you click on 'add comment' for a individual blogpost then it takes you through to the post on WP.com. I haven't yet got to the bottom of what's going on there.
Thanks for the positive review.
Your 'quibble' doesn't sound right - you should be able to use links in the post to the Blog. We'll help if you raise an issue at the project page - https://github.com/cognidox/WordBridge/issues. Let us know in the ticket what version of Joomla you're using , what OS your site is hosted on and your wordpress.com site URL.