I've seen this feature implemented on alot of other forums. It can be used to purchase things like custom titles and small transactions like getting signatures made for you or winning a contest etc.. It'd be cool to see this feature implemented - just ask people on other forums who use this system and they'll tell you it's great - it can help show your appreciation for something aswell.
Fighting Dagganoths under the lighthouse while browsing the interwebz isn't a great idea. I was trying to find out about black mask on 1 tab, turned back to my runescape tab and I found myself in Falador. Must of lost 2 or 3m in items -.- A very depressing day. -.-
Stronghold of Security, Levels 1 & 2. Minotaurs, Flesh Crawlers, Giant Spiders etc.. Maybe not the best drops but good exp wise - you could also try cockroach soldiers aswell.
Diddums. Just get a dragon dagger or a dragon long if you don't like it. A little change in the animation? OMFGBBQ WE'RE ALL GOING TO DIE!!!!!!!!'@@@!11 end of post.
I find it stupid too - junk trading SHOULD be against the rules - junk trading is driving prices up unnessacrily by greedy players. It is basically a form of price manipulation and I'm sure alot of people would rather not have to deal with this.