No follow links : it is really true that it is so hard to retrive dofollow link,but nofollow links aren't good for the website.No follow links may drive traffic. but in search engine optimization they are useless and should be taken as wastage of time.
Low PR sites: same like as no follow links, Low PR sites are not good for the website.The links from low PR sites are not fully useless but its good to get higher PR backlinks.
Anchor text without keyword : If you get a chance to use your keyword in achor text,then just use it rather than using the website URL. Using Anchor texts like-click here,check this etc as keywords is not a good idea you should have to avoid them.
Building links from only home page : Every webpages of your website has its own importance.so Build links for every webpage of your website.
