I once worked at a company here in the US that "requested" that all employees give its products high rated reviews on appropriate sites. There was an actual Google document with a schedule for when we would rate it so it wouldn't appear clumped together and suspicious. It wasn't mandatory, so thankfully I didn't have to participate, but it was pushed pretty hard.

Slashdot.

That's easy. When they get low on power and sense somebody walking nearby, they leap onto their face and inject a cache of minefield-embryos into their belly. Within about a day or so, the host explodes, scattering a brand new fully-charged minefield where the enemy least expects it!