Examples of Wireless Internet Data Logging / Remote Control??

I’m in the early conceptual phase on several projects that would require remote Internet connectivity, and am looking for examples of what others have already gotten working.

If you have [or can post a link to] a successful Arduino project that collects data from sensors, then posts that data to a server/service on the Internet over a wireless link of at least 1km, and optionally receives remote commands from the Internet over the same wireless link that control any kind of actuator or display, please post a short description and a link to your [the] project.

Bonus points for:

  • Mobile data collection
  • Off grid operation (solar/wind/etc. powered)
  • HW cost <$250 USD
  • Operating costs <$20 USD / month
  • Data streams including images

Thanks in advance.