well maybe. but you gotta admit its only losers who would go picking up women on the internet. noway you can know anythging about anybody on the internet
The second part of your post isnt entirely true. Think about it.
When you first meet someone, in life as on the internet, you can't trust a word they say. You file away all the things they tell about you in a folder marked "suspicious". The longer you talk, however, the less reason there is for them to lie, and, at the same time, the more clues you get as to the truth of what they say. For instance, your newfound friend says "i am 6'10" blonde with blue eyes and giant breasts" You file this under "very suspicious". You later receive a photo of the person standing by the millenium bridge in london. You remove the file and place it under "actually possible", later still you have a conversation about london and the difficulty of moving along the southbank without being mimed at or performed to by a crazy clown with a keyboard, and the file gets moved again to "probably true". Later still you go on a webcam with the friend and realise she actually is 6'10" with blue eyes and blonde hair, and underneath her t-shirt appear to be two large zeppelins. you move the file to "probably true".
see? it's not that different to real life. maybe it takes longer but that's no bad thing.
In my experience people only lie for a day or two and then either reveal their lie and giggle a lot or vanish. either is no big deal.