" Don't get more than 20 links on a page. "
Can you just tell me from where you got this idea.
Just google : backup wordpress site to dropbox and you will get 1stwebdesigner in first place. Currently I am trying to compete this site for few keywords.
I just checked the backlinks for this webpage and it got more than 400 backlinks in which 85% are dofollow ( aherfs.com : premium account ). Similarly many of my pages have more than 200 backlinks and still ranks number one for those long tail keywords.