I can see/predict some developer-oriented sites starting to use StackOverflow as their forum, instead of maintaining their own forum. I think it would be beneficial to both parties.
They can integrate Stack Overflow content in their site with tag-specific RSS feeds, and direct people to SO to ask questions.
To link people to ask questions, they can just link to stackoverflow.com/questions/ask. But it would be even more beneficial if they could prefill tags with their site moniker, e.g stackoverflow.com/questions/ask?tags=php,mysql,mysite.com.
Is this something worth considering? (both the feature of prefilling tags, and the wider context of use as a plugin to another site) Has there been previous discussion about this? Would SO find this beneficial? Or is it a bad idea and SO is mostly interested in "direct" traffic and not serving third-party sites?