Woohoo!  Twitter support is here.  You should be able to enter mileage information directly via twitter now!  Just add your twitter username to mymiler.com, and follow http://twitter.com/mymiler. It will automatically follow you, and from there on, direct messages to mymiler will create entries for you.

Currently valid entries are  things like:

100000m 20.00g $3.289

100000m 20.00g 3.289

100000 20.00g $3.289

and more.  Anything that doesn’t get processed is still captured, so that it can be reviewed at a later date.