Before the 1.4x patch merchant's inventories did not regenerate and there was a limited amount of gold, though still plenty if you were not frequently unlearning skills. There were many complaints about the lack of gold and items for sale. So far there have been a few complaints that there is too much gold now. <img src="/ubbthreads/images/graemlins/suspicion.gif" alt="" />

The quest log can contain additional hints for various quests.

If you don't have a trap detect skill, then sometimes you are going to find them the hard way. I save regularly, so have not had a problem with this.