Sprint has some quasi-GSM technology; they acquired Nextel some years back. Nextel utilized the iDEN protocol. iDEN used a time division multiple access (TDMA) network. TDMA is sort of a precursor to GSM. It's small, but there's some overlap.

"* you will see more LOLCats and animated gifs on the front page of Reddit.*"

You'll see less of them these days. Reddit changed its default subreddit system last week and one of the big ones that got the boot was /r/AdviceAnimals.

I'm pretty sure it wasn't that popular even back then (5-7 years ago). I recall users being chided for not using flickr because of how badly imageshack sucked. Imageshack was great for images you wanted to share on small/mid sized internet forums, but flickr was probably the biggest/best until imgur dethroned them. Yahoo! buying flickr probably didn't help much either. Though that's only anecdotal, I never used flickr enough to notice.

I'm pretty sure regulations varies by state. I also think it varies per employer. In states where the wording is vague, some companies will slip in specific language/wording into their NDA and employee policies to cover their bases. Whether those policies will hold up in court is another matter, but it could be an added headache.