Gmail + GDocs = Virus Protection?

So.. I was just wandering through my Google Mail account where I found I had a few new email's in my spam box. I decided to take a peak at them considering I knew not to open attachments and not to download anything. I found a nice email that said 'You can get 5,000$ a week by doing nothing'! Knowing this was a complete joke, I read on. It was a bunch of B.S. of how there was no experience needed at all to make tons of money. At the bottom it read, to find out more ... wait for it... 'Open this HTML File!' I knew immediately that the HTML file somehow was intending to harm my computer. But .. still being curious, I opened it inside of Google Documents. Of course, all it said was:

To view FULL DETAILS please click on Information Bar and Allow Blocked Content in your browser. Thank you.

Well, that was the gag. But the part that I loved as that by using a website that went in and actually read the letter for me, and converted it into plain text, I was completely immune to any hidden viruses it had inside of the documents. Its like a second computer that simply reads the file! It doesn't execute anything to try to make it work, it doesn't download extra things to give the .html file some added functionality. I think sometimes we just need something that does a certain functionality without trying to compromise to get something to work.