Launchpad account recognized on some stackexchanges sites, not all
The answer to Can I (and How do I) use my askubuntu account on other Stack Exchange sites? is actually still correct, but Stack Exchange has changed their login page some so it isn't quite clear. ...
If you sign up to Ask Ubuntu via Launchpad, would a profile get created on the wider SE network?
Yes, it should. However, you cannot use your Launchpad OAuth login on any site other than Ask Ubuntu. So you should also add either a StackExchange local login or a secondary login from, say, Google ...
Only top scored, non community-wiki answers of a minimum length are eligible