Do you think finding serious language partners on italki is easy or difficult?

My experience on italki has been very positive so far. I have been learning Italian since March and have always managed to find enough people for a language exchange. I often hear, though, that it is very difficult to find serious language partners willing to have regular weekly conversations.

What has been your experience with language partners?
Is it easy or difficult, in your opinion, to find and keep them?
Any tips you can share with others?