2. With some limitations. (4GB file size limit for example.)
3. Most do.

But let me write the ONE MISTAKE FOLK REPEAT so you don't have to. Do not use this as STORAGE. Find some SYNC SOFTWARE to sync when you get to work and for when you leave. If you don't believe this will not happen (plug in drive and Windows wants to format it) then you only need to read the CNET Storage Forum for the pleas for help.

Also, why not use DROPBOX for free?