MicrostockGroup

I'm about 4 years active in microstock now and trying to expend. Was on Alamy since last year with only 4 photo's, but this week I started uploading more. There are not a lot of sales, but when you got a sale it's really worth it.
Are there more sites like Alamy?

The sites I'm allready on are SS, DT, BS, FT, iS and Alamy now.
What are good sites with good profit?
I'm not interested in going exclusive, but I'm open for all options that will gain my income in photography.

I was asking about Getty but someone PM-ed me that you have to be an exclusive on Istock to get accepted. But are there more agencies like that, who don't have that restriction?