I think it does'nt matter with your niche! But be sure all terms which you use in your content must be owned by you
Only if you are violating the TOS. Here is a novel idea, you could take the time to actually read the rules straight from the source. There is a reason Google Publishes a TOS
no you can do that if you want it doesnt get your account banned or anything like that so dont worry!!!
I dont see any reason why your blog would have adsense problems if its about forex. Go for it, good luck.
Should be ok - But you need to read the rules for yourself. What if you do it and then you get banned because of it? What are you gonna do then? Come back on this forum and complain. If you do not read stuff for yourself you are gonna find it hard to progress in what you are doing. OK - it is fine to ask for help - but for something as important as the rules - you should find out for yourslef.