It's awesome. You just have to be careful with it, as it is a lot more damaging than one might expect. Do it too often, and the magic will fade fast, as it causes some neurological changes with heavy use. Some reversible (like receptor downgrading) and some less so (like hippocampal damage leading to reduced word recall ability).
Like most things, moderation is key. Do E a few times a year, with at least a good month or so in between doses, and you should be fine. Do it every week, or take very large doses, and you'll be seeing problems.
Aslan-- Welcome to Bluelight and to Blogs! olympic_smoker is right, check out
Basic Drug Discussion or
Ecstasy Discussion for the answer to your question. Off the top of my head, I don't know for certain how seroquel works, but I'm guessing that it is either some sort of dopaminergenic agent or a general CNS depressant, which would affect the E to a small extent.
Regardless, it looks like you've found your way to BDD, so happy trails to you. Feel free to keep using your blog though!