Looking for ways to reanimate a WSO

Hi,

I'm running a WSO right now. In order to make sure that
there's no perception of conflict of interest here, I won't
use my signature for this thread (it has the URL for the
WSO in it). I'm not interested in using this thread to
"fool" anyone into checking it out. I hope the spirit of this
comes through.

OK - now that the context is out of the way, I'd like to
ask about legitimate ways to reinvigorate a WSO that
has moved to the second page - without waiting to
bump it back to the 1st page.

Ways I've already started/considered:

Asking people who have lists to give me a hand.
Running an ad (free or paid) in an ezine.

The problem with this idea is that the
price/volume of my product is such that
it probably wouldn't be make sense to
run a paid ad (a lesson to learn). Similar
thoughts apply to the idea of bumping.

Sending out a tweet to twitter. I have a
Twitter account, but I have no idea how to
use it effectively for this purpose. I've
been told that it can be very useful, however.

Posting to a blog and then doing a ping. I've
got an older blog that's gone into disuse and
have made the post, but haven't yet pinged
because I'm wondering if that's somehow
considered spamming...

Your thoughts would be very much appreciated.

Regards,
Bal