The only way to look it up is the "source code" view in your browser and "Ctrl+F" to search for it. Alas, I don't know how to code a proper thingy for searching the database with comfort. I'm very sorry :(
But do you really need to search? If you leave a comment on the site, it will stay there forever, a free ad.
Over on The Belfry WebComics Index I've added a 'Scrawl' message mentioning the Random Webcomic site. Hopefully it'll get it some hits. Unfortunately I can't add a permanent entry for the site, because it's not a comic site per se.
Nightshade the Merry Widow (NSFW, nudity/sex)Comic Fury
Created by Ed Kline and Kishma Danielle, co-writer Lee M, assistance Bob Partridge Storm Over Whoomera (NSFW, nudity)Comic Fury | Renderosity (first page)
Created by Ed Kline, co-writer Lee M. Now sadly defunct, but the archive remains.
You have my permission to add mine (Bones and the Space Jolly Rogers) to comic database. My story just started out, but I'm cool. Sounds like a huge project and a good potential! Kudos to your efforts.
One question however... is 18+ comics allowed given that we have some gory and violent comics here... not to mention sexual content, nudity, and language. My comic will have some NSFW and gory scenes later on from my story outlines.