The only thing I miss in Google's thing is ability to allow people w/o tech savviness and w/o google account to sporadically add things to my calendar and have

The only thing I miss in Google's thing is ability to allow people w/o tech savviness and w/o google account to sporadically add things to my calendar and have them marked as unconfirmed (like semi-transparent). I don't care if they'll recieve any further info, I want people to add their things to my life. The subject of "who the hell isn't tech savvy enough and doesn't have an account already" is quickly answered with: I'm an uncle, my niece knows her way around the computer and knows the calendar, but has no idea why'd she need an e-mail account, and wouldn't bother to even try at this point.