Any tool called "bomber" is by definition simply going to mass aggregate fans and therefore not bring relevancy.
It's essential to understand that Facebook's system not only forbids certain automated means of adding friends but relevant (as in the engagement between your fans and your posts) has a significant correlation on the amount of times your posts are viewed. Through their "EdgeRank" system pages with low engagement rates are moved out of sight -- having fewer fans who actually like the brand will result in more fans viewing in the end.
Case in point. One brand I worked with had nearly a 2:1 views to fans ratio at the 100k level. After the 500k mark that ratio had dropped to 1:4 so with 400k more fans they were getting less views. Today their focus is on upping relevancy, not aggregate numbers.