Yes. You can re-download as many times as you like and onto as many machines as you like. Steam games are tied to your account, nothing else.

But be aware that some games have third party DRM that can limit the amount of machines you can install the games on and in some rare cases these install limits are non-refundable. If you have any doubts about the DRM of any game you're interested in then it's best to ask in the forums first. Credit cards do random fraud checks to ensure that everything is above board. After all you're effectively using their money to buy stuff so they can be as nosy as they like. Valve have on occasion reacted badly to this and it can take time to restore the situation.

It's better to use a debit card or Paypal. Better still, use Paypal with direct debit so as to not leave any money in your Paypal account. Paypal is another company you've got to learn the limits as to how far you can trust them. Leaving money in your Paypal account is not advisable as they're not recognised as a financial institution and aren't regulated as such.

A Paysafe card is also a great way to pay in Steam, I've been using these for the past few months for purchases. Check out the Latvian website.

I don't want to sound like a complete GOG fanboy but GOG is based on trust. They are releasing games that you can easily download from torrents and play without worrying about a proper crack, and that is what makes me want to spend money here. Steam, on the other hand, sounds like communism.

I know what you were doing last September.

Nope. Steam sounds like a modern business where users, developers, and publishers don't matter anymore, and only the seller (Steam) does.

I'm not sure you can really make the claim that GOG is based on trust more than any other distributor. You can find virtually any game for download somewhere on the internet - if anything games on GOG would actually be harder to find as torrents or http download.

And yet strangely Publishers have at least twice as much control on Steam than they ever did on Retail...

Little by little, that control is being removed too... Noticed what happened to EA and Crysis 2?

Yes, they conflicted with another publishing deal made by Crytek. And yet, EA still has far greater control over price, sales and even has every right to disallow their games on Steam if they chose to do so.

I don't know why anyone would think that retail outlets are saints. The PC really would be a dead platform had it been left in their hands. If anything we've got Steam to thank for pioneering the successful games digital distribution model that has kept the PC in the game - if you'll pardon the pun.

Sounds like communism to me...

...which didn't really matter since EA started Origin as her own online distributor.

Get a dictionary?

I think the word you're looking for is fascism... as in, the exact opposite of communism.

I already have it, called internet.