Steam Cleaners

[wocka]

I know nothing about steam cleaners, however, some time ago on a TV programme they used a steam cleaner to clean a shower and it was amazing - the shower was sparkling in minutes. There are several tiled areas in my house that are looking grubby and I am wondering whether to buy one.

Does anyone have a steam cleaner, what type do they have, would they recommend buying one and what do they use it for?

Also have seen people talking about steam mops - are they the same sort of thing?