Does anyone use Google+ Hangout?

Does anyone use Google+ Hangout?

native writing I'm sending a text to my friend Dina to tell her that I can't show up at 7:00, because there are a lot of traffic right now. This is my text "Sorry Dina, I'm afraid I won't be able to get there at 7 o'clock. There are a lot of traffic in here". Is the sentence correct? Or usually how are we writing in native culture?

Is there a rule or trick of when we should add auxiliary "to" after "go"? We use "go outside", "go there"(I was using 'go to there' a lot), "go to Canada" and "go to the bank", but is there a simple rule for them? Or I have to remember each of them?

Is there a semantic difference? Is there a semantic difference between "If she is going to the party, I won't go." and "If she goes to the party, I won't go."?

What I have done since I got up this morning I have read a book called Professional Javascript for Web Developers. I have ate my lunch at BISU's canteen next to my apartment. I have drunk two cups of coffee in the afternoon. I have watched three videos of EngVid and studied English tenses.

"If you call me again, I will reply you" I have received a phone call but I didn't answer it. Then I was thinking if he calls me again, I will call him back. Is there anything wrong in those sentences.

What's participle? Is there a good article or lecture video for it?

Were they studying? My mom always care about her children's homework. If one day she is not at home and when she comes home next day, she will ask my dad, "were they studying last night?".

native speaking If the water temperature in the water heater is very low, what do the native English speakers say? "The water's temperature is low"?