What do people here know about Mobile WiFi (MiFi) hotspots?

[TexasTowelie]

6. On most mobile hotspot plans, the carrier will throttle you back from their highest speeds

to a speed that literally crawls after you use so much data. The carrier will usually allow you to pay a fee (like $10) for additional data on a one-time only basis before trying to push a more expensive plan. That's okay if you have your cable go out and still want to get on the Internet for a few hours, but cost prohibitive as a long term solution.

If you are primarily reading Web pages and company related material then you probably don't use much data. However, if you are thinking about streaming video or exchanging large amounts of data related to your work, then a mobile hotspot seems less than ideal along with posing security concerns.