Often I find myself writing an email to myself whenever there is stuff to be memoed. It's not something that I'd prefer to write on a tablet or on paper because the memo can be quite lengthy and hard to write because for instance, they can contain a long HTML link. This is rather inconvenient and I was hoping to find other solutions for conveniently writing and keeping that memo online.
Preferably, something web based would be good but a light-weight software is fine too.
I'm not looking for anything big, just something that has simple features such as sort by subject,date.