No need for the Obamacare IT expert, God knows you don't want him telling you anything.
This, and most websites like it, are two part entities. You have the web server / front end server which hosts all of the actual web pages and code which tells your computer how to display the site (the .HTML files or whatever language this site is written in) and then behind it you have the database, which stores all of the information contained in the site itself. The error message above is from SQL, the database backend for the site and it's saying that the transaction log is full. Every time someone does anything on the site -- writing a new message, adding or subtracting something from their humidors, almost anything really -- that's a transaction. If the transaction log is full, it won't accept any new transactions until the existing ones have been written. When a SQL database stops accepting transactions, the end result visible to the end user is basically what you see - a nasty error message.
Looks like the nightly maintenance plan was running and either a disk was out of space or their TLog settings need to be modified. Either way, we're back up now! :)