Where did you get that? 128 MB?
Those are from the Jurrassic period of thumb drives and flash memory, probably about four or five years ago. They're being thrown into landfills daily, along with dot-matrix and daisywheel printers, vacuum tube radios, and other perfectly find but "hopelessly obsolete" technology. I was going to mention 8-track tape players as well, but they SHOULD be thrown away.
I use self-e-mail and MOZY online backup. It allows up to 2GB for free. Thats probably more than enough for everything I'll ever write in my life. Besides, the Internet can't fail so that's fairly safe. If it does fail then I'll just be one of billions suffering from the disaster.
The Internet CAN fail, or large parts of it could become inaccessible, but if that happens then many other disasterous things may have also happened. You don't want to think about it.
I do recall a story on Slashdot, there was some small country (Taiwan, maybe?) a year or two ago that gets most of its Internet bandwidth through a very few undersea cables. One or two of them failed, and access to any site outside the country was very slow to impossible (as well as for anyone outside the country wanting to access sites hosted inside the country). That's sort of a "bad design" of the infrastructure, they "should have had" more cables and redundancy, but it's an example of how the Internet can be messed up short of
Global Thermonuclear War really, really bad things happening.
But a single backup site/service/business may well decide "We're not making any money at this, we don't expect to, and what's worse is we can't even convince the bank or any venture capitalist that we're going to make money someday" then all of a sudden you can't get to their website. You can only hope that some other business buys up the company's servers and puts the data online for people who need to do restores.