Firstly, I've been looking at some questions with broken tags recently. Take a look at What is the difference between Platform-Independent and Cross-Platform? for example. The question is about terminology and has absolutely nothing to do with C, C++, or Java, and I re-tagged it as such, and left a nice reasonable comment, but the author has tagged it back, because he added them to get a bigger audience. This is not the only question where the questioner has added more tags just to attract more attention and admitted to it in the comments on the question. I don't know if I've just noticed more recently, but it seems like this kind of thing is on the significant increase.
This also decreases the utility of the favourite tags feature. I make heavy use of it and I personally find it very irritating to click on a question tagged with my interested tags only to find that actually it has absolutely nothing to do with my interested tags. Normally I just edit them out, but if the author edits them back in, then I don't really know what to do. The questions don't normally deserve closing and I've never seen a question have it's tags locked.
Secondly, I want to draw attention to some use of the chat. People drop in to the chat, drop a link to the question they just asked, and then leave, or give a one-liner asking for help. I don't know if I'm the only one who feels this way, but the chat is for social chatting. It is not a reserve of answerers at the beck and call of anyone who was smart enough to look there. If someone has a question, then we have a Q&A site for that, and if someone wants to look at questions, they will browse said site. It is only somewhat annoying when the question is related to the room topic, but it's getting ridiculous when people are dropping Bash or Javascript questions in the C++ room just because there are people there.
I feel that these two issues are degrading the signal-to-noise ratio. People are doing whatever they can to get more attention for their questions, regardless of whether or not other people actually want to see them.
Should I just get more aggressive about flagging for moderation?
Edit: Not that I'm not sympathetic about having a question with no answer that you can't solve and being stuck waiting for one. I've got my own unanswered questions. I'm just not the guy to be asking about your Android problems.
language-agnostic
is the best fit "major" tag.