There is very little else to judge people on here, so yeah, I absolutely will form an initial impression (a “working theory”, if you will) based on a person’s user name. As far as “fake” names (which people choose for themselves), they actually give us far more useful information than a “real” name that is assigned at birth by people you’ve just me (your parents). And yes, as Miriam and Anastasia have suggested, overly generic English full names are extremely suspicious. Most people are too cautious to put their real full name on public social media sites, so a “Tom Jones” (for example) is likely a scammer. Also, a real American (or Canadian) would never think of calling himself “Ed from Canada” — why on earth would he call himself that? Note: There are always exceptions, so we need to look at the full picture. For example, I have a very high degree of confidence that a certain user who uses his first and last name is not a scammer, and that he is a real, motivated language learner. This is based on his many public comments and posts.