I think it can, I personally think it should, and I personally hope it will
The way I see it as ideal is that everything is linked form the webid (or “safeid” we should have our own name for it), you share a webid with your contacts, and that’s what they use to discover everything about you, inbox, coin wallet addresses, blog urls, websites you reference, friends, etc. You can update that at your will, they never realise or need to know when you do it, apps automatically discover it when fetching your webid. Plus, you can have several webids, one for your business, another for sharing with friends you make, maybe another for only close friends and family/relatives, perhaps anonymous webids you use for trolling …etc.
Once I gave you a webid, I can then simply ask you to send a payment to me, check my blog, or to send me an email or Patter message, without needing to give you any more info, you already have my webid in your contacts list, that’s it.