[ta12121]

1. The dot indicates the likelihood the person would respond. I would imagine it's an attempt to encourage people to try talking to others that are less than perfect, since they are more likely to respond.

2. Because if they haven't been online in 3 months I don't want to waste my time emailing them.

[wtvanhest]

1. I get that, but in practice it doesn't work that way since almost every women is red.

2. That is why it could say... "online in the last 48 hours"