Normally i use Reddit, Delicious, Digg, Identica for bookmark my blog new post. So if i continuously use those same site then Google consider me and those do-follow links also spam? If i use those 4 do-follow sites with another bookmarking sites then this issue fix. Thanks!
It does not matter as long you do not keep post the same thing on the same social bookmarking. Atleast it useful compare to using those low traffic and low PR social bookmarking that do not bring much help.
Yes. me, i do it manually. Need to check the page rankings, and website reputation before i go and bookmark mysite. if its approved, then i gain backlinks.
Yes, it good to use selected but quality social bookmarking websites. There is no use of submitting URLs to junk sites from which you cannot get traffic and backlinks. But number of sites you are using are very less. There are many other quality websites, explore them too!
That was I usually do when I bookmark. I just select those social bookmarking sites that gives more traffic and have PR. Even though they're not so many but I'm sure they are already trusted sites. I do it manually so that's why I only use few of them.
Simply use different IDs every time ... and also add some good websites as well ... If this is time consuming for you than you should hire someone who do it manually only.H Here are a list of other TOP DO FOLLOW LIST of social bookmarking, please click below - http://forums.digitalpoint.com/showthread.php?t=2348419