I'm of two opinions. Ideally, they aren't the sole resource the person uses but part of a greater strategy which includes several options: church, activities, hobbies, friends, etc. The possibility of letdowns is greater if alternatives aren't utilized.
My primary concern is the person's ability to handle rejection without growing despondent or questioning their attractiveness and worthiness. If you've experienced a stream of no's without explanation or reasons which seem shallow or minor in your mind. It can be difficult to continue without negative consequences to your esteem or mindset.
Many become embittered and throw in the towel. They expected fairness and considerations that don't exist in that realm. It's not a fair fight. The market is biased and heavily slanted towards physical attractiveness, wealth, or demonstrative experiences (e.g., travel, events, etc.) captured in technicolor for all to see.
Social media is the same. Certain people garner a lot of attention for similar reasons. Other content is barely noticed. Even though the substance may be of greater value than the other. That's my sticking point. If being ignored or turned down will mess with your head I don't advise it.
You have to know your limitations. It isn't the only avenue. I wouldn't fracture my self-esteem for a possibility which may never yield the spoil I'm hoping for. I don't use them. I've connected with men through forums which had a dating component embedded in the site.
I don't think you can grasp someone's character through a few paragraphs. Forums allow me to see their mind at work and the values they espouse openly. Depending on the topic, there's greater transparency and less pretending to a point. I don't believe everything I read. But it's a starting point.
I met the gentleman I'm engaging with now through a forum I used to frequent. He posed a question about a piece I'd written on the art of being a lady and how to utilize the skills for positive reinforcement (in the relationship) and public gravitas. He messaged me and asked how to find a woman like the one I described.
The question on its own revealed his substance and our discourse reinforced the idea many times over. But without the catalyst which inspired the question. We're limited to the brevity of profiles and snap judgments. You can miss a diamond in disguise because the depth is absent. And you're basing your decision on less important factors.
You're on a site with Christian women seeking the same. Get to know a few and see what happens.
~Bella