Pros: If you just need to get computers talking to one another, this is perfect. It's cheap, tiny, and the wall wart is small enough that it won't block too many other slots on the power strip.

Cons: I'm kind of leery of the price - seems super low. I suppose I'll find out in a couple of months if that matters. Also it's not a gigabit switch, but then gigabit would require shelling out actual money.

Overall Review: Someone else said that these things cause wide-band radio interference. His must have been defective; mine is set up right next to a wireless access point, and I can't detect any more interference than normal. (and anyway, these things would be illegal if they caused interference like that)

Pros: If you have too much money, you can easily get rid of it by buying this.

Cons: It costs money, and yet does nothing.

Overall Review: Basically, no matter what handwavy sorts of things they put on on the product packaging or say in the description, these things simply do nothing. If this had some actual effect, you could expect to see numbers - for instance, "this product boosts the antenna gain in most wireless phones by <some number> <some units relevant to antenna gain>.", or perhaps "this product increases antenna sensitivity by an average of <some number> <some units>". Unfortunately, the manufacturer can't say things like that because this has no measurable effect. Anyway, think about it - if you could actually make your calls better just by putting a four dollar sticker on your phone, wouldn't the phone manufacturer have already built in something like that? It would make a great marketing bullet point, and cost next to nothing.

Pros: Cheap, free shipping when I bought it, very quiet but moves enough air. Basically everything I wanted in a fan.

Cons: Unfortunately, this fan is a bit thicker than most others; it's a hefty 38 cm. I didn't notice this before I bought it, so the fan won't fit where I intended. Still, I fully expect to find somewhere else to fit it.