Guitar Feedback, Any technique to it? Options

[Staples]

Although guitar feedback can be a nuisance, and it happens a lot in my small little quarters. Don't have the $$ to get anything to help prevent that at the moment. My question has to do with using it though. I hear some artists, not many, but some who seem to be able to control the feedback and make it a part of the song. Perhaps it's all just studio-ized but I'm not sure. Do you know if there is any technique behind this? If you do even a simple text response in this threat will help a great deal. Sure, it's not up on the level of sweep picking but I think it'd be a neat little technique to have in the arsenal.

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