Yes, Each submission is not simple work. You have to select Directory which is good atleast with good alexa ranking even if it dint have good google pr.
Article submission, don't simply cut copt paste with your url. Type atleast 2 para about your concept( product ) - nature of work, benefits, specs or something useful when someone read it and it must tempt them to view your url. not too much technical english to confuse.
Blog and forum, most of comments are not imm getting accepted. dont post anything aggressive about your needs, just post it as your are a 3rd person thoughts. so your comments will get approve easily.
Originally Posted by chikankari
Forum Posting are used you get get quality of backlinks.