Wishlist - Gmail-type auto-save everywhere

More and more I find myself writing on web-based applications. Examples - blog posts like this one, company wiki entries, web-based mail, etc, etc.

The risk of losing my work is pretty significant: either by browser crash, windows freezing, dropped internet connection, expired session, involuntary Windows update (urgh!!), etc.

Gmail's auto-save functionality is excellent, and I'm not sure why they seem to be the only ones doing it...I guess there's some real technical difficulty involved.

If so, it would really be great for some web 2.0, AJAXy company to come up with a licenseable version of auto-save functionality similar to that in Gmail. It seems like a large number of apps are going to need this in the next few years...

[update] Ironically, I lost this post twice while writing it on TypePad via a wireless connection. TypePad must have very sophisticated content detection algorithms that kill any item hinting at potential shortcomings it has...

[update #2] I lost this post for the 3rd time. I'm starting to think my conspiracy theories above might actually be true... so I'm not sure this post will ever see the light of day.

[updated #3] OK - it's got to be a conspiracy... TypePad isn't going to support auto-save, and they don't want you to be aware of this problem. Furthermore, they seem to be very aggresive about blocking any mention of this... I can't seem to be able to hack their system to publish this post!! It's usually so easy with posts on 'regular' subjects... last attempt...