For the past several months I had been entering my fuel data into a really nifty web application called MyMileMarker.
As you entered each successive fill-up the application would chart your mpg. Not only that it was estimate the odometer reading of your next fill-up based on previous usage.
Unfortunately it would appear that this site is now more. I went to it yesterday to enter my latest fill-up to find that the site had disappeared, only to be replaced by a parking page by their webhost.
Maybe someone else will come up with a similar site.
There does seem to be a problem with the milemarker.com domain, but you can still get at the site via the less friendly URL http://m3.sidebarcreative.com/
@Dale Lane: That is excellent. Thanks.
The main domain seems to be working again…