Todd Jordan carries on the discussion of “why is it not cool to submit your own content to link sharing sites?” Here’s my answer that I left as a comment:
Submitting links to your own works is the “of course my kid is the cutest” problem. Let me explain …
Content sharing sites thrive because of the signal-to-noise ratio: high quality, low volume (compared to “the web at large”). As you point out, nobody has time to visit every page on the web. Social link sharing sites (Digg, Stumble, etc.) work because someone else’s effort (submitting a link) results in your being able to visit a subset of the web, presumably of hand-selected better-than-average quality.
So, of course you’d want to submit links to your own stuff, because, you know, it’s better-than-average, right?
WRONG. Of course your kid is the cutest. But, if other people also think your kid is cute, maybe you’re on to something.
If everyone starts submitting links to their own stuff–intsead of someone else who also thinks your stuff is worth sharing with others–then these social link sharing sites’ signal-to-noise ratio will plummet and finding the worthwhile links amongst the crap will make them less useful and usable.
If you can’t find at least one or two people who think your content is worth submitting somewhere, then maybe you have to just accept that maybe it is, indeed, crap.