Ubuntu and chat api

Hi. It is possible that this is a bit off topic but since I am registered here I am sure there could be some people here who experienced this already.

I was thinking about adding a group chat service (not installed software) to my members area in my website. I would like to use it on my page, blog and maybe add it to my facebook so it would be on the same window and it would need to synchronize. I want same window because this way there will be always some guys to talk with.

I know that some chat services have have the option to export the chat history and you can use the content to increase their website SEO, since you have more keywords to rank for. I found Rumbletalk www.rumbletalk.com which seems decent, Chatnox seems alright as well.

I would like to know if anyone is using it or if you would suggest me something else? My budget is about $50 a month as I tested so several free ones that were not worth it. You don't need to suggest mIRC or chatwing, I tested those and I wasn't satisfied at all.

Thanks!