Remember we already have Google-Groups for Selenium users which receives highest amount of traffic for Selenium qs. Idea was to close Google-Groups once we have dedicated Selenium area51 site
Yeah... I think I know what's bothering you, and I'm afraid it comes down to a misconception about what Stack Exchange can be used for.
See, we don't really like to do product-support sites. That was an idea early on - prior to and during the SE 1.0 days - that ended up just not working out well. As the platform has evolved, it's become clear that running an effective site requires some careful management: the Q&A format works very well for some topics, and extremely poorly for others.
An example of something that doesn't work well is long-format discussion: we kinda allow this on the Meta sites, but it's - at best - a poor substitute for a proper forum. We actively discourage such questions on the main sites.
So setting up a site for a particular product, and then letting users of that product talk about... whatever... is a dangerous suggestion. We could easily end up with a really crappy forum / bugs database / social network instead of an awesome Q&A repository. Instead, the idea is to put together a community of expert users in a particular field and let them answer questions on topics germane to that field. Could browser automation be considered a "field"? Could Selenium alone be? Maybe...
But it doesn't appear that this was actually anyone's intention. Reading the posts in your Google Groups, the prevailing idea seemed to be that you were trying to do just what you stated above: shut down the groups and move everything over to SE. That's a bad idea for both of us!
We can't import existing posts, or existing users. You just can't convert arbitrary threads into structured Q&A and expect it to work.
We can't operate like a mailing list - so mailing-list users like Bob McConnell would be unhappy.
We don't really have support for lengthy back-and-forth discussions - so it's unclear that this would even work for replacing the developer mailing list. (FWIW, it's telling that while the Area51 proposal did include "contributors" in the target audience, all the example questions are on usage.)
In short - for developer discussions, announcements, and other non-Q&A topics, you're probably best off staying in Google Groups rather than trying to hammer your square peg into the round hole that is SE. For questions on working with Selenium, we very much hope you'll find the proposed Testing and QA site a welcoming environment.
I'm sorry if you feel ignored or otherwise offended by this decision. We're trying to create the best possible site for SQA engineer and testers, a place for sharing knowledge, and that includes knowledge of web automation software - just as it does desktop automation software. Yes, you'll be a small fish in a big pond relative to both the proposed site and your current situation... But that's kinda the point: you'll have room to grow, exposure to people who aren't currently Selenium users.