I'm in the UK, and I check TotalJobs and CWJobs daily (Mostly out of curiosity) - I don't actually go to the websites, they email me, persistently, every single day. It was annoying at first but I've made it part of my morning routine to take a look at the cooler jobs they send through, it means I will be in a good place when I finally decide to change companies - I will already have a bucket of potential jobs to sift through without the headache of having to search.
You don't. On the 1st of every month, that account posts a Who's Hiring thread. You comment in that thread with the details of your vacancy and how to apply.
2) Smashing Magazine, http://jobs.smashingmagazine.com/, has a good job board for front-end developer and web design jobs.
3) Python job board, http://www.python.org/community/jobs/
4) Startuply, http://www.startuply.com/
5) Angel.co, https://angel.co/jobs
6) Dice
7) Stackoverflow