This bar is uncomfortably long. I understand that you probably made it this way for balance but I don't believe that is necessary.
I would consider placing a white background behind your content. (at least for the 'learn more' page) The color you chose is great but is weighing pretty heavy. It feels a little thick and suffocating. Adding a white mid-ground would alleviate this and also bring more focus to your content.
I think you have a great idea here and would love to participate! I believe I'll sign up. :)
Overall, your aesthetic is nice but your layout needs tightening up. I wrote a bunch of points here. Hope they help.
The email form is highlighted well and it is clear what you want me to do. Nicely done.
Text and background
The aesthetics of your design are great. The "You are not alone" title is clearly communicated. However, the line below "You are not alone" is not very readable and blends into the background. My eyes naturally floated from You are not alone" to "We help you find them" which did not make much sense.
The icons look much better without the text but I think they look a little cramped. Maybe making the speech bubble a little bigger or the icons a little smaller would allow for more negative space. The rest of the page benefits and is beautifully balanced with negative space.
I think you are on a winner here. The home page is very enticing. In my opinion carrying the lighter colour through the site, especially where there are big chunks of text, would improve usability and also prevent users from overloading on the intensity of the rich background.
Overall, the site feels fresh, professional and fun.
I would soften the colour a little of these ... its too lime green for me
For me the logo for the site itself is one of the weaker points... the speech bubble is so strong and out powers the mundane logo. TalkerPoint has enough associated imagery for a good logo design.. I would suggest this being revisited.
I like this aspect of the design - especially with the words in there as well...
Could you oscillate speech bubbles as the background instead of the rectangle mosaic... maybe be theme overkill or could work...
Think of adding here three or four chatrooms or topics or something like that to engage. If I stumble and don't want to chat right now, I leave and maybe forget the site. If I see a very interesting topic for me, I'll maybe stay or come back later.
The only thing I think is missing is maybe a screen shot or even better, a short video showing me how this thing works. It sounds like a neat concept, but I'd be curious to SEE how this might benefit me. I realize you may not have a working model that's ready for screen capture, but I think even a series of screen shots that show the basics would help those of us who are more inspired by visuals than by words.