1. Clever. You can probably build it yourself with some google voice hack. My computer (via googlevoice chrome plugin) tells me when someone has called or texted already, which is pretty useful in itself because there are often times when I've left my phone somewhere but I'm on my computer.

2. http://www.groupon.com/now, https://livingsocial.com/instant. I don't know if they are in Pittsburgh yet but will be soon, and maybe google will join the fray now that offers is there.

3. In Chicago (also flyover country) we have http://Peapod.com

4. http://www.getpeek.com/ was an attempt. A failed attempt as far as I know, though it did get a lot of press 3 years ago.

5. I can always tell by looking at them. You should add a sliding clean/dirty thing on your dishwasher.