What's the effect of the sid files? I got two sid files which are D3157100A.sid (instasearch) and D3406090A.sid (traffic trends v3), and how can I see the difference by adding these? If I don't add these two files, I can still use traffic with internet connection (in iPhone). As for instasearch, no matter add D3157100A.sid or not, I can't get the quick spell search as shown in the video.

Thanks!