I'm trying to figure out how to buy some Liberty Reserve USD, but to do that I need to use an exchange service.  There is a huge amount of them to choose from, and they mostly look pretty dodgy.

http://www.libertyreserve.com/en/public/exchangers

One of their featured Exchange Services is a "Leading Liberty Reserve Exchanger in NIGERIA"     I don't think so!  And that one actually has a professional looking web site.  It goes downhill from there.

Can I trust sending money from my bank account to any them?

There are a few recommendation sites:

http://www.bsrates.com/
http://www.lrexchange.com/
http://www.gdcaonline.org/?target=ratingtable&businesstypeid=1

But even after looking through these, I can't figure out which to use.

Can anyone recommend a trustworthy exchange service depositing money from the US?