I have nothing against OLD, but my bread and butter right now is Facebook. Its a pretty simple process that I follow depending on if the chick messages me first or if I message her.
Must be fb friends or it doesnt work. I am certainly not batting 1.000 but I could easily add 2-3 lays a week from fb if I had the time and space in my current rotation of chicks to do so.
Women on OLD in general know what to expect from guys that message them through OLD sites. If they are not a total sloot, they are guarded, think they can get any man they want because of the attention they get from guys just looking for a piece of @ss, etc. The OLD women get false validation because the average good looking guy would only bang half of the decent ones and never take them out in public. The spin this around to think the same men messaging them on OLD would still approach them in a crowded bar, and that's just not the case. For the most part they are primarily pump and dumps.
On fb you can see their history through pics, know if they are in and out of relationships faster than Lebron changes his playing shoes and eliminate those pump and dumps/emotionally fvcking crazy women. You can screen them based on their pics, info, etc. and if you have several mutual friends its a bonus. Its just a much more covert way to slide in than approaching chicks on OLD. And since the chicks I hit up on fb arent there to promote themselves in the dating world, it makes it that much easier to get into a little chit chat and then invite them out for drinks.