Gigfinder.com is a site loaded with musicians, bands and songwriters. Someone posted the question "Where are the gigs at?" and it got some responses. Along the lines of "yeah we gotta tell them club owners where we at!"
There are many problems with this specific site's concept that will not be solved by getting the word out to club owners and booking as the posters suggested. Craigs List works better without consciously trying. Worse, Gigfinder is ugly to look at (All red text on black background actually hurts the eyes) and does not organize itself according to location. That's enough to kill it right there.
Booking talent of any kind requires an audition. Before that happens some kind of personal connection is probably required to filter out the untalented, talented unreliable, etc etc. It is no fun to find nice ways to tell random people that they suck without them badmouthing your place to everyone who will listen. Or letting the air out of your tires. Or telling the police there are drug deals going down at your place at 2am.
Start out at open mics, jams, poetry slams - something. Get to know people - musicians, bands, wedding planners, owners - and work your way in your local scene - there is no shortcut.