Why can a few wall items be seen by the public even with tight privacy settings?

[whatarewedoingtoday]

Things like wawdt changed her profile picture etc
Thanks

sorry, also always wanted to know - how do you do those tiny black hearts?

No idea about privacy but a heart is

most people don't have their profile picture set to private - profile pic and name are usually the most basic information available to everybody. if you're really worried then use a profile pic that isn't actually a pic of you.

Thanks Vag and may