Hi, I’m Jure and one of the things I do is to help people talk and work with their communities so they can improve their products or services. Often they want to outsource at least part of the talking to me, so I’m given a new online identity. The name is still the same, but you get a new email (with IMAP and everything) and often business cards with this identity. If you’re lucky it’s also a Google Account (via Google Apps) that you need to share calendars, gtalk etc.
As you help different organizations, you keep accumulating these identities that you can’t shut off because you never know who will decide to email you on that address or which account you’ve got registered. On top of that, you almost never completely stop helping them unless the project gets shut down.
So now you have tons of email addresses, that each connect to different identity that you use to talk to bloggers. The only problem is that there is a limited number of meaningful connections that you can have. So you email people from all these identities with different questions, forwards, reply-alls and so on.
This does at the end of the day mean, that I’ll have to talk to myself via different identities, CC other email or info@ accounts (that I control anyway) so that we can make sense of our world. That everyone knows who belongs to who, depending on the email domain.
I have yet to write multiple (personal) Twitter accounts or Foursquare logs, even though I’m sure that this day isn’t far away.
So if you see my replying to myself from a different domain, it’s all normal, it’s just that I don’t want to break online balance of identities.