Get Laid Tips

Some of my female friends just entered the world of online dating, and they always ask questions about the messages they receive. For instance, they try to figure out a person by the length of their messages. For instance, if a guy sends a long response, then my friends will think that he’s probably desperate, of if the guy sends a short message, then he’s probably chatting/talking to a lot of women, etc.
This is ridiculous. Why not just find someone who you’re interested in (or could be interested in) and just go with the flow, instead of trying figure everything out before anything happens?