Hmmm just looked and your right its not obvious is it.. But I did see it somewhere.. Plus I know the owner Joel and thats the idea...
Anyway theres no need for multiple.. If 250meg isnt enough he will give you more space.. For FREE
The general idea is one account per person and get some free space added.. Of course if you need too much then blah blah
Believe me your not the first, only or last to have multiple accounts.,...I am guessing hundreds have because they dont realise you can simply ask for more space.. and that is in the docs