I don't normally search, else I'd say I find them via searches, but after some time under "more like this" I end up on things very different than what I started on. That tends to lead me to happy places. One of the people I'm watching sometimes gives me suggestions as well.
I actually usually find artists I like through comments sections like these. I see a cool avatar and I automatically click to have a look. But I also find a lot of people through the job offers form simply coz they'll say "Hi I’m interested please visit me at [link] thank you" and I can’t help but go have a nose about.
Front page set to newest, favorites of other people I happen across, Google an artists name I heard and see if they have a DA. I don't know, hell I can't remember where the majority of the people I watch were found.