With the interest levels on these boards combined with the hectic schedules most interested parties do have, this makes the most sense.
So the format here can be simple:
Have a Fighting Game that you have been hankerin' to play with others that also has online capabilities/netplay features? Post up about it and see if anyone wants to play.
Just make sure you mention the game, what online service (PSN, XBL, Steam, GGPO etc.) you plan to play it on and what times/nights you are available.
You can also use this thread to talk about the games, discussion on the competitive aspects of them and/or post up vids of your matches for entertainment or comments/critiques.
Easy peasy.
If you are also interested, you can drop a pile of titles you are willing to play and advertise times you are on and what your online tags are, for the possibility of random invites and challenges.
Old format buried here 7/29/14: