(CNN) -- On this week's Tech Check podcast, Doug Gross, John Sutter and Stephanie Goldberg explain how a multiple apps have been using Apple's mobile operating system to collect, and keep, users' contact lists.
Twitter, and relatively new social app Path, are just two of the apps that acknowledged they were storing people's contacts after a developer pointed it out. We talk about what Apple has done to address the issue.
On a lighter note, we talk about this week's arrival of "Angry Birds" on Facebook. The ridiculously addictive bird-flinging game, which has already dominated mobile phones and tablets everywhere, is now playable by users of Facebook's 800 million or so accounts.
We'll tell you the crazy number of times "Angry Birds" has already been downloaded on other platforms and how the new version will be taking a cue from "FarmVille" and other social games.
Our Reader Comments of the Week come from a post on our What's Next blog about about a mobile app being developed in Boston that would use your phone to automatically report potholes to the city.
And our Tech Fail of the Week goes to Chris Brown, the now Grammy-winning artist who, among other issues, reminded us this week that just because you delete something on the internet (in this case, Twitter) doesn't mean it really goes away. Ever.
To listen to Tech Check, click on the audio box to the left. To subscribe, you can add Tech Check to your RSS feed here. You can also listen, or subscribe, on iTunes or using mobile apps like Stitcher.
In the mean time, you can find us on Twitter at @cnntech or on the CNN Tech page on Facebook.
And a special tip of the cap to CNN Radio producer Jonathan Binder (the "Angry Birds" soundtrack this week was all him) and the John Benjamin Band for our outro music, "What We Need More of Is Science."