Ive just been using Bookmarking demon.. and i think i may of just damaged my domains.. ive totally not over done it.. only a few links here n there on different accounts.. and lost rankings.. so not sure its all what its cracked up to be.. anyone else got experiences ?
i've used socialmarker myself few times and it seems to be working Ok for me. however, some SB sites listed there are nofollow and i usually submit to only the dofollow ones