For social bookmarking I want to use onlywire.com. When i am going to signup there has 2 fields "website" and "industry". This 2 fields are mandatory but now I have no site or blog. So what I will do for this 2 fields?
Im not sure but maybe they accept blogger blogs? If so you could quite easily create a blogger blog and put the link on the sidebar... I just put my backlink to them on a redundant wordpress blog. I wouldn't really advise paying for it, it is decent but probably not worth buying imo. An alternative is "Social Marker", it is a bit more manual, but then again it gives you full control to change the titles etc for each submission: http://www.socialmarker.com
You have to have a website with Onlywire unless you are going to pay for an account. I have had good luck with onlywire.