- One said they decided to merge their two listings and I wasn't qualified for the new joint role.
- One asked me to do a small programming challenge, but afterward indicated they were pursuing a local applicant (they had said upfront relocation would be covered).
- One invited me for an on-site interview weeks later, but I had already taken my current job (found through Craigslist).
I'm not upset at all for the behavior of the companies that did respond. Even if they were working the market, from my perspective they were very respectful.
I am very pissed at the non-acknowledgements and it makes me more and more likely to start sending shotgun emails. (I definitely have crafted my cover letters carefully and researched the companies up til this point.) At the very least, I'm going to start being more extreme and aggressive in my prose, and skip traditional fluff.
That said, I adore my current job, so I don't expect to be leaving anytime soon. :)