1. Is also because people want to have ego stroked and sex all the time. If you have tons of potential mates but you just only want to email with them for 2-3 m

1. Is also because people want to have ego stroked and sex all the time. If you have tons of potential mates but you just only want to email with them for 2-3 months, and not sappy emails, but just emailing to get to know eachother, then you weed out most of that. All the 'fast ones' are completely gone by that time and you are left with something that could be 'real'. You never know, but this advice got a lot of people permanently together when we owned a dating site where we didn't want focus on one night stands. Which ofcourse happened a lot (and worse), but this seems to work effectively if both sides can withstand the usual 'ah, ok, well here's my number, see ya in 10' after a few texts. As that usually ends in not all that much; fine if that was what you were going for.