Profiles, PMs and Messenger List, Oh My!

As my subject implies, this is a multi tasking post.

Is there a way that someone can tell if their profile is accessed? I have seen people disappear from a room after I try to check their profile. If so, where is this available? Does the program tell whom did the checking?

Does Yahoo version 7.5 normally have problems with a PM chat being dropped? I will ask a question and I assume the other party is either ignoring me or there are other problems because I get no response.

Can my “friends” tell if I am online, even if I am in invisible mode? One of my friends asks me why I don’t say hi to her when she is comes on, but I am usually blown off if I do.

Does Yahoo have an add-in similar to the “do not call” list? I don’t want to ignore someone on the slim chance they might want to send me a PM, but I need a reminder to not send them a PM.

Is there a Yahoo piece that can tell me if someone has PM turned on or off? Profiles are notoriously inaccurate, but I also don’t want to waste time waiting for a response when my PM is in the bit bucket.

I use YTunnel release 4.20 with Yahoo 7.5. YTunnel has its issues, but I like the protection it offers from booters and bots. I unload it if I want to use my cam, then restart Yahoo later. Yahoo 8.0 had too many issues and I went back to 7.5.

I also have XP with SP2, McAfee Firewall and Comcast cable internet.

Any help would be appreciated.