Need suggestions on what to put in the empty white space

JobCull | One Job, Two Job, Three Job, Cull

I like Indie Hackers front page, on my third revision, I decided to copy the layout. A quick rundown, I am currently working on a job search engine that searches through all the unpopular job search sites in one and a content management to save and view all of your applied jobs in one place.

On the left side under contact, I've been trying to think of what to add there for weeks but cannot come up with anything. Indie Hackers has meetups but I do not think it will work well with what I'm doing. I was thinking about creating a mobile app and have a click here for a mobile version but the site already works on mobile web browser and I think it will just be a waste of time and no one will use it. An ad placement? Maybe links to other job search sites or resources? Or just leave it blank? Any suggestions would be helpful, I'm stuck.