When Dean Allen shut down Favrd (a site that collected tweets and ranked the by number of likes), he said this:

"Alas, stars on Twitter have become mere take-out menus hung on the doors of other restaurants."

Meaning that, in his opinion, people were liking tweets simply to get their tiny avatar noticed, and perhaps earn a follow.

I'm trying to be conscious of that here. The fact that there are so few likes going around means each one gets noticed more.