User blog comment:WOB Silas/Lulu -- strengths, weaknesses, and roles/@comment-3275908-20121018111102

As said, Lulu is indeed one of the most underrated supports in the game. Using her and playing against her, I realized her greatest strength is starving the enemy for kills. She also tends to give the opponent the false sense that he could jump in and grab a kill or harass when really she can stop them from doing so and even turn the tables.

Her ult is on a relatively low cooldown, and she has ways to slow, silence, shield, and relatively make aggression near null. She might not have a heal, but she has a toolkit that keeps enemies from doing damage. She's great at protecting the carry as long as the carry doesn't take silly risks.

That's my assessment of her anyway.