Playing Small Pocket Pairs Pre-Flop

[studiopet]

According to Harrington regarding 55,44,33,22:

In early position toss em
In middle position, limp with 55,44 toss 33,22
In late position, mostly raise with 55,44 and call with 33, 22

I don't know how I feel about his advice on late position play. I tend to toss them if i'm not BB/SB and limp if I am.