If you bookmark your site on say, delicious, does it help to then ping the url on delicious that contains the bookmark to your site?
Does pinging the page on social bookmarking sites whre your site has been bookmarked help SEO?
If I understand correctly, you want to know whether links to your content from a blog syndication site, (i.e. blogcatalog.com) created when you use a service like pingler will increase the likelihood that your new content will be spidered by search engines - to that, I would say that links from reputable websites won't hurt.
The way your question is worded, however, suggests that you are asking whether registering a pingback to a bookmark-tracking site when the bookmarking site links to your content is a good idea and I think this is where John Conde is suggesting that the suggested activity is not productive - issuing a pingback to a bookmarking site would essentially create spurious metadata.