Let us start counting if there are literally 700,000 search engines, directories, free classifieds etc. Top website submissions say in their home page that they will submit, rather you will submit using their advanced submission software to over 700,000 Search Engines, Directories, Link Pages, Online Malls, Classified Sites!
I browsed their tour of he submission process and I am impressed with what I saw. Only, I have no money at present to pay and use their submission software.
There are several pricing plans starting from $14.99 (why not make it to $15.00?). I think it is a worth try for serious internet marketers.