When the entire point of online dating is to meet your best match, going without that result after a period of time spent online will often cause frustration to the point of dismissal.
It is not just enough to see her online dating profile, it is more important that you truly read it and ask her a question about something pertaining to it after you are done reading.
First messages like this have a higher likelihood of getting a response.
Most guys make the mistake of completely ignoring what the girl said in her online dating profile when they send that girl the first message.