The branding links at the bottom of each chunk of content now open in a new new tab / window. I'll look into making all the external links do the same. I definitely can't do nofollow though because most of the API implementation agreements specifically forbid that :) They paid for / continue to pay for the development of the plugin as well and so it wouldn't be fair to them anyway.
The IDX link functionality has been replaced with dsIDXpress integration.
Could you please describe the issue with the descriptions a bit more? I can't duplicate it on my end. The more specific you are, the better.