[luckylion]

> But.. a company like Facebook should know better. It seems they just don't care.

I agree 100%. If it was a simple hobby project that somebody had hacked together, I'd agree that it might be easily overlooked. When you have thousands of people supposedly working on making privacy a priority etc: not so much.

[throw_away789]

I think its deliberately kept open. There are 100s of apps in play store that can help in predicting if 2 people in your contacts are in conversation.

People like keeping watch on others and Facebook is exploiting that.