Chasing only one foot print is not good in link building, your overall link building profile should look natural.. if you are using social bookmarking then use almost all the platforms on which social bookmarking sites are created.
i want to give the ranking my site on Google 1st page which is bookmarking site makes on wordpress pligg theame. is that possible pligg theame site have a ranking in google first page. i am asking because this is without content and i am not see any bookmarking site in google ranks 1st page.
Anything is possible, but it takes a tremendous amount of work or luck or a combination of both to appear on the 1st page of Google for popular keywords. You may want to try targeting some less competitive long tail keywords.
I dont think that its possible, simply as these sites tend to draw in content that is poorly written, computer generated, and or respun and submitted elsewhere. I have a site like this myself, and in many cases, the content is just gibberish. If there was only top quality articles, then perhaps, but if its a general spammy bookmarking site, I dont think you have much chance.
Backlinking on pligg sites won't rank you anywhere in google. You need to get various backlinks from various sources. Getting high quality content backlinks will get you good rankings. It is a time consuming process. I hope you have patience and some depth in your pocket.