One of the best optical tricks

http://pics.nase-bohren.de/lookatthedot.gif

I assure you, it's a genuine optical trick. It's not a screamer (only the image colors change), and it's not a cheap trick.

If you want to know how it works, highlight the rest of the paragraph: When a color changes while we are focused on something, for a while we see the inverse color of the one we were watching instead of the new one.

The mechanism behind this is similar to this one.

Online privacy is no longer the "social norm"???

After Facebook's latest updates to privacy settings, though you may think you left all your settings to "Like Before", and even double-checked and triple-checked your privacy settings, there are some things you just cannot hide (If you can, please tell me how!)

One of them is the pages you're a fan of. These can be viewed on your profile by just ANY Facebook user. Apparently this was made in order to attract more traffic to fan-pages, who may have paid in order to achieve this. Personally I just removed myself from any fan pages and I also know many other people who did so, or at least removed some fan pages. Is this the effect they wanted?

The other one is your profile picture. Yes, there is a page in the Privacy settings that has your profile picture with the question "Who can view this?". You think you've set it to "Only friends", but it doesn't work. Try it - there's a button that previews your account the way it will appear to unknown Facebook users.

It appears that a lot of people complained about this, but Zuckerberg tried patching it up by saying that "online privacy is no longer the social norm". Read the article here. No further comments.