Sometimes people are using such expressions as, "dear, honey etc" in a completely platonic manner. No one is trying to be rude or invasive. That is just how they have been raised to talk, regardless of whom it is they are talking to. Just be sure you are noting the tone of voice and the context in which they are using the term. Obviously cultures can clash, but thats part of being a global citizen, just be flexible and if something is definitely in the wrong tone and is making you uncomfortable then definitely speak up about it. In regards to people wanting to use webcams; of course there are those out there who want to misuse the privilege but there are also people who can learn from watching a native person speak. The way their mouth moves, the expression on their face when they use a certain phrase or expression etc. I probably would have never been able to make the Chinese "ü" as in “去” if I had not watched a native speaker produce the sound. Everything must be taken with a grain of salt. When you are experiencing and dealing with foreign cultures one can not be too sensitive but in turn must be sensitive to others and always open minded.