As a moderator - I'm fine with using them as a source, as long as the answers meet our quality guidelines. Nearly all my answers are from tools I have found around various parts of the internet. We do cover a much smaller scope than them and hopefully are less noisy.
I would discourage advertising there, naturally since some reddits are sensitive about it. If folk there find/reference us, thats cool though. If you hang out there, are part of the community and it comes up... awesome. Just don't do anything that can be seen as spamming, astroturfing, or worse... ;p
I have a few concerns as a user.
Firstly - is it powergaming? If someone is consistantly posting answers from there, its probably going to annoy some folk. Once again, quality would sort this out. Likewise, if people here post there, we need to respect their space.
Secondly, the main reason other sites dislike software requests - will this software be supported? I'd grant that I've asked questions on unsupported software, but it may suck to find an older hobbyist project has one version and was never updated, or worse, the site is gone.