Last night I opened the browser. It was on some random page I don't even remember. I then went to bookmarks to load my web-based yahoo mail and this thing came up on the screen (hid the address bar, so I figured it might have been an OS thing that just finished downloading for all of a few moments and then I realized it wasn't something official (like an OTA update) so I e-mailed myself the link to my desktop machine.
I downloaded a screencap app (where you shake the phone to take a cap) and this is what I saw:
which took me to this suspicious link (I viewed on my desktop browser). I've been poking around and this app seems crazy. On the market for less than 7 days, over 250k downloads, talk about many people "accidentally" hitting some button charging them $10/month... I wonder how many people got that screen above, thought it was an official OTA update (much like the Windows Defender/fake desktop popups I see) and installed it.
Anyway... watch out for it. Could be malware.
Thought I'd share with the rest of neogaf on this.