This is where Skype comes in. You should have a video conversation to make sure you are talking to the person in the photo. You should have a voice conversation to see their reaction and pauses.
Having a conversation online involves less risk and less stress compared to a face to face conversation.
However, there are a few things you should take into consideration when using Skype
A phone or a laptop camera creates low quality images and your partner will look uglier online than it does in real life.
Your partner might have a virus on their phone sending you weird links on its own, so you should not click on those links unless you are certain they sent it.
Don't worry if your account sent a weird link, this way you get to see how your contacts react and what they really think about you.
Don't be afraid of making spelling mistakes to see how your partner reacts and how compatible you are, don't over do it though, you don't want them to think you have skipped 1st grade.
When someone is rude to you, you can just block them, you don't have to be rude to them back.