On Fiverr some people offer web 2.0 backlinks, others web 2.0 profile links, others forum profile links. I'm trying to get the best value for my dollar, so what would be the conversion rate on how much link juice I would generally see per link? Example, which would be better to link toward my site for $5: 12 web 2.0 articles or 40 web 2.0 profiles or 100 forum profiles? I've heard people complaining that only a small portion of forum profiles don't require you to log in to see them. Is this true? Are they still providing link juice if you have to log in? Any other thoughts you have to help would be appreciated.