Yes and No. These are what I would call Sammy links - you are basically using a umber of forums etc to get backlinks, in qantity from the same provider. Soon enough, most of these forums would be loaded with so many link cheats that the whole value of the forum would die out. You may get a short term boost, but I would advise against it.

Some of these link profiles are what we call "dirty" i.e more likely to get penalised.

I came in to add link to my post http://explicitly.me/manipulating-google-suggest-results-–-an-alternative-theory but seems coule of people have already done that Thanks guys!