Gorodenkoff/Getty Images If you were born anywhere between 1981 and 1996, you might remember an internet that's vastly different from the one we use today. Along with experiencing a smorgasbord of '80s and '90s nostalgia, millennials were one of the first generations to actually grow and mature alongside the internet. This means millennials have seen plenty of online trends come and go, including the rise of instant messaging apps. For those that grew up in the era of landline phones and Blockbuster Video stores, we're taking a look at some instant messaging apps that only millennials are likely to remember….