Submitting to hundreds of these won't do anything, it's called obsession and over-doing something. they don't get enough traffic to pass to the submitted sites. Instead, concentrate on the established, well set-up directories that offer more. Unfortunately, many will crash and die, it's partly the nature of the badly set up and managed directory format, and the ease of riches to be had from the web just encourages. Anyone can set up a directory, setting up a decent, profit-making one that actually delivers ROI - well that's something else.
Put it this way, the average directory will probably deliver about 3 unique visitors to your website a month. if you submitted your website to 1500 directories and got accepted in 500 of them you would receive about 1500 FREE visitors a month to your website. Also, did you actually get accepted in most of the directories you submitted to? If not, you were probably submitted to the wrong category or had a bad description or title for your website.
it helps on my sites I created my own directory www dot BullShitWebsites dot com for 400+ of my sites and it helps in traffic and ranking. Now it has about 1000+ entries and it is just 3wks old. Yes, it helps!!