I mainly used Briefcase from mid-2003 to end-2004. My dad's notebook didn't have floppy drive, so I just put some things I need in Briefcase and download it at home (for those good-ol'-floppy era, check out this 1994 unaired 24 pilot). I had a USB flash drive since 2004 but, check this out, most computers I used back then were still using Windows 98! I know! But what can I say? Sometimes I can just install the driver using the preloaded CD (assuming that I don't need administrator access for that, which sometimes exactly the case), but most of the times it was plain easier to just upload it to, guess what, Briefcase.
So I had some ppt files, chat archive,
The use of flash drive after that was inevitable since everyone using it. Beside my work at the office, I also did some freelances, all heavily relied on flash drive. Funny that when I used it most, I lost mine. Twice! I remembered that Sony was sort of worried because the last thing I load into the lost flash drive was a serial concept that we develop together, and he was afraid someone might stole it.
Here, I have online storage for my work at campus. A few months ago, I also start using Gspace. So essentially, if I don't have to change my OS, I don't count much on flash drive anymore. Except now I do.
When I start writing my thesis, I used zotero. The thing is that I had to use two different libraries at home and campus. Problem solved when I use zotero with portable firefox on my flash drive :)
*edo would say that this graph will look much more cooler with timeline
The fact that I practically rely my life on online storage and flash drive gives me chill sometimes. Just last week Gmail was down for 2.5 hours, and I started to panic. Oh well...