Who's Hank?
Hank.. is the name of a guy... who sounds (from his name) like he might be a car guy. He's also the name of a domain that, until recently, was available. 
Is it possible to show only results since a certain date, or filter the results in some other way?
OK.. basically, I can implement anything that you find at the cars sites themselves (autotrader, cars.com, etc). However, in order to respect the rights of these sites, HanksHelper does not actually parse their results in any way. It simply retrieves them and bunches them together in a nice, manageable way. Unfortunately, that means that I am limited to only providing the functionality they themselves offer.
To start with, I've implemented all the features that are common across all the sites (except for keywords, which aren't supported by Automotive.com, but are useful enough to make an exception). Adding features supported by only some sites is a little bit trickier, because it has to be set up in such a way that Hanks is still easy to understand and still works with the other sites. I will consider these features over time though.
Why don't my keywords work on Automotive.com?
Unfortunately Automotive.com doesn't support keyword searches. Sadly I'm limited in what I can do by what the sites themselves provide. (See the point above.)
I have another question that's not listed here!
In that case, I'd love to hear from you! Please send me an email.