I will give you a couple recommendations:

- Filter out "CyberCoders", "Robert Half", etc recruiting firms. These make it hard to view jobs especially when I get shown descriptions lifted from my own company's postings.

- Some alerting mechanism that doesn't just spam me every day. For instance, I would like to look through new postings with descriptions that match certain keywords. Any existing site today just spams me with anything containing "software" or "computer" in the description.