ONLINE DATING FIRST MESSAGE TIPS + 3 Openers That WorkHayley Matthews shares 8 simple ways you can make a good first impression online. The same rules apply to online dating. You must double, even triple, check the words that you use in your profile before you put it out there for the world to see. Just one error could make someone skip over your profile. There are thousands of singles using eHarmony right now, so you have to stand out. If you have a truly unique quirk, feel free to put it in your profile. Someone else could share a similar quirk or relate to it.