I actually never used G+ (I made an account, hated it immediately, and left). my formative internet community - some game-centric, largely not, but still influential on my own creative process - was the deviantart 2006-2009 complaints forum. the complaints forum was for complaining about EVERYTHING, not like, website-related complaints. the general miserable bastard zone. and it was the bad part of the overall deviantart forums, which every other part of the forum dubbed "the worst part of deviantart" and "don't go there". I thought it was great and I made many friends there who I still keep in touch with now. sometimes mutual complaining is a great way to bond, after all.