The original poster over on the Daas Torah blog has commented on my original post. So, I am posting my response to her. However, I'm also using that longish response to begin a new post on the same topic.
Over and over again, I hear that parents object to a potential shidduch between their precious little FFB and a gyoress (or ger). Usually the reason cited is that they don't want to deal with in-laws who aren't Jewish. Well, what if such parents don't exist? I mean, what if the potential shidduch's parents have both passed on? This also destroys the argument that you have to worry about interference from non-Jewish grandparents. I suspect, though, that no man would look at my profile on Frumster long enough to see that even if it were in my profile. They would see "convert" and that would be enough for them.
Now, moving on to the "revocations," the number of these revocations is few and far between compared to the number of conversions out there. I, as a convert, wanting to take the side of the one who's conversion, often find it hard to, as usually the rabbi has a good solid case for revoking the conversion-the conversion that should not have happened. I'm glad that I went through a beis din with a pretty solid reputation. I know that the girl who converted at the same meeting as I did, has already married IN ISRAEL. She sent her papers over to her now mother-in-law who took them into the beis din where she lives near Tel Aviv where they were accepted on the spot without questions or anything.
Also, if you think about it, an FFB could be blacklisted in the same manner that gerim are "revoked." Rabbis could suddenly refuse to give references for them and a community could speak about how they fell off the derech and they, too, would no longer be able to do anything in the Jewish community (like get an Orthodox mohel or get their kids into an Orthodox school) if they came back on the derech.
When BTs come back, they are questioned. I was told by a BT that several people have accused her of being a gentile who didn't want to convert. Where's her proof that she's Jewish? Why didn't she read Hebrew? I've also heard of BTs who got rejected for Aliyah.
Finally, when someone's precious little FFB is over thirty and still not married, perhaps one should consider that a gyoress might be a viable option.