Hi,
Your requirement is quite clear so no questions about the idea behind this. However, I'll need further detailed instructions for the data to be collected, e.g name, phone, email, ect. Also, at the start of the work I need you to specify the minimum Chrome and Safari versions to target.
I'm a full blown backend developer and as a result I can't bring any graphic work competency to the table. I'll create the extension with basic components/graphics so if you need any work on this frontier you should handle it separately. I hope that's not a deal breaker.
All the extensions I've developed so far were private implementations. I have no extension listed on Chrome Web Store, at least not I'm aware of if the owners have not decided to publish it there. As a result, I can't share any with you directly since I do not own them. However, I have permission to demonstrate some for situations like this. For instance, I've developed a similar LinkedIn extension with a wider scope for another client responsible for parsing the profiles. If you'd like I can create a screencast of it at work.
As I've said above as much as the task is simple and clear I have doubts about the data to be collected so if you can describe this a little bit more detail for each website that'd help a lot. Because of this my current bid is just a placeholder and I'll update it as soon as we have a chance to discuss and clear these vague points.
Thanks
Aydin