How well does social bookmarking work nowadays?

I have slipped down from page 1 on google for my main search terms. I had to revamp my website and change all the urls to new ones. Now I am ranking on page 3 for all my keywords and I am not moving from there. I used to use socialbookmarking as the main strategy apart from onsite optimization.

I need to social bookmark my 100+ pages to get them indexed.
Is that a good idea?
Do you know any service that will bookmark each individual url to at least 200 of the top socialbookmarking sites?
I am willing to pay if you think its worth it.

You can get ranks early but you need to use variation in your keyword when you are doing bookmarking. When you get more links from the same keyword then google can punish you and down the rank of your website.

social bookmarking works pretty good, but as already advised make sure to diversify your anchors..

for good socialbookmarking providers you can look in the Marketplace here..

still continuing with bookmarking to promote my websites. Its a great method...

Just diversify your anchor tags and link sources. So not only links from social bookmarking sites, but also directories, blogs, photo's etc.