This is probably kind of a strange question, but over my academic/professional "career" thus far and as I am currently applying to grad schools I am often updating Resumes/CV/cover letters, etc. and when I do so I usually just end up emailing them to one or both of my primary email accounts as attachments. I do this because more often than not I am on the go and working on a variety of different computers, including some public.

Besides a thumbdrive (would rather not have to carry it on me) is there a better, more efficient or reliable method for storing/editing documents like this that will allow them to be readily accessible to me and with the newest/most updated version from any computer? (under the assumption that I always have internet access)