We Will Get You Plenty of Inbound Links
REALITY: Garnering effective and related inbound links is not 2 day exercise. It requires researching related sites and sending effective, well structured requests for reciprocity. Not all "potential" link partners will link back to your site, some of them just don't carry links.
Oh, it's easy to go to blogspot, or any other free blog host, rustle up a bunch of free blogs and embed some links to the client's site. Is this effective? Not really, these links have very little effect , unless they are legitimate resources with real information that is related to the target site. The current SEO World Championship is a classic example of "link bombing" and I am certain that once all the black hat sites are discredited from the competition, we will see only a handful left. These tactics work well in the short term, but you will get penalized in the long run.
The other trick, is to use some submission tool and blast the "free directories" with listings. Search engines are not dumb. They have within their database, almost all these FFA (Free For All) sites and discount their link status. Sure, the SEO can quite safely say "look at all the links we have set up", but are they of real value? I think not.
Good SEO's will find those sites that will link to you and these sites will have good value. Even those with a relatively low PR are useful, as one day they too will climb the PR ladder and become valuable sites to have link to yours.
The best way to link to and from other sites, is to choose a particular page with relevant content, add a "target" site link to it, then ask the other site do the same. It works a whole lot better to have individual pages link to each other, than to have a list of categorized links in a "links" section.