“Facebook is not a good place for any singles! Whatever you put on the Web stays there forever!”
If you have a Facebook page but are VERY careful about what you post this should not be a problem. There are legitimate reasons to have it and if used correctly it can be fine, single or married, assuming that the person has self control and knows what they are doing.
“Similar to the texting problem, it does make it easier for teenage boys and girls to talk. But once you are in shidduchim anyway, I don’t really see the harm.”
Are you dating a teenager or a young adult. If the shidduch in question had Facebook as a teenager then you might have a legitimate tayna. Then again, people change a lot after they hit 20 so even someone who was a big Facebook user in High School shouldn’t be rejected right away. Like any issue in shidduchim, you have to realize that everyone is different and it is very dangerous to make a blanket statement that “s/he has Facebook and therefore I have no interest in the Shidduch”
I think that if you are investigating a shidduch with someone who has Facebook, check out their page (not just for the pictures). See what they post (and what they don’t post), how often they post, etc. Then make an informed decision.