Events on meetup and eventbrite are often crosslisted.

The two websites have such similar UI’s (and their logo’s are of similar color) that I didn’t even realize I was on eventbrite instead of meetup.

I was looking for a meetup feature and couldn’t find it.

I ended up googling what I wanted (on meetup), and only then realized I was previously on eventbrite.

Kottke also redesigned his site so have a similar appearance, all white and flat. It looks good, I guess.