I'm going to give you folks some freedom of creativity.
The logo should probably contain a globe (either realistic or surreal), along with something that indicates this is a dating, romance, people connecting site.
I've seen globes modified into the shape of a heart, so that's an option...
It should incorporate the domain name, especially the ".net" to differentiate us from the .com, which we have no connection with.
Logo orientation should be landscape considering it will be located across the top of the site. Perhaps minor variations can turn it into a vertically oriented logo for other purposes... open to suggestions.
Format: Photoshop and/or Illustrator files. If you provide a photoshop file, I want enough resolution so that I have freedom to do with it as I please. Bigger originals are better.
Added after #27: Two things I would like to see someone create... (1) use a photo realistic globe and (2) add some kind of radiating circles around the globe to give the impression the globe is, well, radiating...