How many users do you guys think are there on Fanpop?

They're probably over 9000 !!!!

it's probably 50,000 to 100,000. I am using a similar method that ThePrincesTale used but the only different is I am estimating high because I don't think half of all fanpop users didn't sumali twilight. It's probably madami like 20% that joined Twilight. Look at all of the anime users. It's pretty popular and one would be correct in noting that several anime users also like twilight but there's also many that are not fans of it. Same goes for the other big groups.

2,127,526. Just kidding, I have no idea

Ten


Ok, I was only kidding -
I'd guess about 10'000. This doesn't have as much as Facebook or Twitter have.

There are over 20,000 fans of the Twilight spot alone (the most popular spot... lol a remnant of a bygone era in fanpop's history, I think).

If half of users never fanned the twlilight spot... there's over 40,000 in total. However, this could be an overestimate if a greater proportion of all users fanned that spot. Consider that Twilight was massive and many people probably joined fanpop because of it.

So I'd probably place the number of total users between 30,000 and 50,000.

Number of ACTIVE users... well that's different all together.

There's gotta be at least 20,000. Maybe more