iDine/Rewards Network - Profile info on multiple accounts?

Hello...I will sign up for DL, AA, UA and PC iDine programs soon...I know that I need to use a different card for each iDine account, but do I need to create a different username and use a different email address for each one as well?...I remember reading something along those lines but can't find the thread now and want to make sure before I create multiple usernames/email addresses for nothing.

I would suggest a different username, but keep it simple:

My username pattern (baed on name sdsearch in this example) is:

sdsearchaa - for AA
sdsearchdl - for DL
sdsearchpc - for PC

For UA I would do the same if I could use a username, but can you now? When I signed up quite a few years ago, I could only use my UA MP account number, even though for all the others I could use a username. (Which is a pain, because it's my old UA format account number, and now the UA account numbers have changed to a CO format.)

No need for a separate email address. I use the same email address for all of them, and I've never had any issues with that.

Thanks...yes, UA has usernames now