I've noticed a few strategies people employ to get noticed by the moderators:

1 Post Early!
2. Post Long Comments
3. Catchy opening line
4. Post a reply to the topmost leaf node: this means that if the first post has a first reply which has a first reply, reply to this, and then you'll be the 4th message on the list unless one of the messages is dropped below the reading threshold.
5. Use mind control on the moderators: use words you want them to have in mind, e.g. "interesting," or "information."
6. Do a quick google search on the subject matter and post a moderately relevant link.

I'm not saying I'm blameless, but I try to keep in mind that slashdot moderators are like monkeys whose throw karma points instead of feces.

Comments?