Очень занимательное место, мне тут понравилось, правда… Столько всего полезного и позновательного, я тут задержусь на долго.

what does this mean?

means "Very aspect place, I liked it, the whole truth ... So much useful and poznovatelnogo, I keep it for too long."

spam in other words

sounds spamish to me. but sometimes I keep it and delete the URL. depends on if it is a real comment or not